Careers - Xcimer Energy Corporation

We’ve hired the top talent in fusion, energy, defense, aerospace, semiconductor manufacturing, lithography, high-performance computing, and academia.

We plan to double the size of our team over the next year. Join us in our mission to commercialize fusion energy.

How we work

Fusion demands precision, creativity, and collaboration. It rewards those who can question assumptions, solve hard problems, and stay grounded in reality. These are the values that guide how we build together.

Respectful Critique

We invite criticism, welcome debate, and require honesty, but never tolerate disrespect or rudeness.

Accountable Trust

We trust each other with great responsibility and ownership of our responsibilities but hold each other accountable to deliver on commitments.

Humble Ambition

We aim to do great things while remembering we stand on the shoulders of giants.

Rigorous Urgency

We must act quickly and decisively while maintaining the highest standards in an unforgiving field.

Benefits

We take care of employees. All full-time employees receive competitive wages, comprehensive healthcare, and stock options so the whole team is motivated to win.

Flexible work environment
Relocation package
Equity compensation plan
Professional growth opportunities
Generous sick leave and vacation days
13 paid company-wide holidays
Up to 12 weeks paid parental leave

Health, Dental, and Vision insurance
Flexible Spending Accounts
Short-term and long-term disability
Life and AD&D insurance
Employer-matched 401K plan
Dog-friendly workplace
Free lunch Tuesdays and Thursdays

Internships

We run a highly competitive internship program where our interns work alongside our scientists and engineers on projects such as computational simulations, optical code development, hardware testing, and materials analysis. And they have a lot of fun!

Learn about our internships

Current Job Openings

36 open positions across 5 departments

Responsibilities

Develop new optimization routines for the adaptive optics loop.
Coordination and close collaboration with vendors to develop and drive the 'next generation' of AO platforms for Xcimer’s needs with a focus around deformable mirrors and wavefront sensors.
Coordination and close collaboration with vendors to develop and drive the 'next generation' of AO platforms for Xcimer’s needs with a focus around deformable mirrors and wavefront sensors.
Assist in aligning, calibrating, and running adaptive optics hardware on a laser system.
Assist in characterizing and understanding the optical environment to set requirements for an adaptive optics system.
Leverage and improve wave-optics propagation code to model the laser systems.

Qualifications

Education: B.S. degree in optical science/engineering, or related field.
Experience: 5+ years of optical science/engineering experience directly related to adaptive optics systems.
Experience working with multi-disciplinary engineering fields including optical, opto-mechanical, software, and controls systems.
Experience in developing adaptive optics systems using best practices and optimization methods using wavefront sensors and deformable mirrors.
Experience in high fidelity physical wave-optics propagation in the near and far fields.
Experience in optical subsystem integration and alignment.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

M.S. or Ph.D. degree in optical engineering/science, or related field.
10+ years of optical science/engineering experience directly related to adaptive optics.
Experience in characterizing turbulence in beam paths and developing Fourier based wave optics models for beam propagation.
Experience in the design of adaptive optics coupled with beam pointing stabilization systems.
Experience in high energy optical systems working in the deep UV.
Experience in defining and setting adaptive optics-based requirements from system to component level.

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Responsibilities

Design, develop, and commission PLC‑based control systems across process, manufacturing cells, motion control, and building automation, owning the work from initial concept through production deployment and operational handoff.
Support the stand-up of new manufacturing lines, including greenfield and brownfield deployments, equipment integration, and factory acceptance testing
Program and debug PLC software using IEC 61131-3 languages (Structured Text preferred), with a focus on readable, modular, and maintainable code with object oriented programming
Integrate and commission industrial robotics systems for part handling, assembly, inspection, and material movement
Develop and configure fieldbus and industrial networking architectures, with a strong emphasis on EtherCAT-based systems
Implement machine safety systems and interlocks in compliance with applicable safety standards (e.g., ANSI/RIA, ISO, OSHA), including the application of functional safety principles such as SIL or Performance Level (PL) where required
Design and review electrical control schematics, panel layouts, and P&IDs in coordination with Electrical Engineering and external vendors
Develop HMIs that balance operator usability with effective diagnostics and troubleshooting capability
Interface machine-level control systems with higher-level manufacturing systems such as SCADA, MES, and data historians
Troubleshoot and optimize automated equipment to improve throughput, yield, uptime, and overall equipment effectiveness (OEE)
Collaborate closely with Mechanical Engineering, Manufacturing Engineering, Quality, and Operations throughout the equipment lifecycle
Support creation, deployment, and handoff of documentation into production, including operator and maintenance training
Work with external machine builders, integrators, and suppliers to ensure system performance and compliance

Qualifications

Education: Bachelor’s degree in Electrical Engineering, Controls Engineering, Mechatronics, or a related technical discipline
Experience: 3+ years of hands-on experience developing and commissioning control systems for manufacturing or industrial automation environments
Strong experience with PLC platforms used in manufacturing environments (e.g., Beckhoff, Siemens, Rockwell, or equivalent)
Demonstrated experience standing up or supporting process, manufacturing, or assembly lines, including integration of multiple machines or subsystems
Proficiency with industrial fieldbus and communication protocols, including EtherCAT (required); experience with Profinet, Ethernet/IP, CAN, or Modbus is a plus
Experience integrating sensors, actuators, servo drives, VFDs, and distributed IO in machine control systems
Solid understanding of industrial electrical systems, control panels, and relevant codes and standards (e.g., NFPA 79, NEC, UL 508A)
Strong troubleshooting skills across software, electrical, and system-level issues
Ability to work hands-on in a factory or lab environment, including occasional lifting, standing, and on-equipment debugging
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience with Beckhoff TwinCAT, including EtherCAT configuration and distributed motion control
Experience integrating industrial robots (e.g., FANUC, ABB, KUKA, Universal Robots)
Familiarity with functional safety concepts such as safety PLCs, safety IO, and safe motion
Experience with machine vision systems used for inspection or alignment
Experience with SCADA platforms (e.g., Ignition) and production data collection
Experience supporting automated systems in a production or high-volume manufacturing environment
Familiarity with version control, code standards, and structured documentation practices for control systems
Greenfield manufacturing startup or rapid scale-up experience

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Responsibilities

Design, develop, and commission control systems for test and measurement applications, including laboratory and industrial test stands.
Lead or contribute to verification and validation (V&V) activities, including test planning, test procedure development, execution, and reporting.
Develop control, automation, and data acquisition software using Python, LabVIEW, and related tools.
Integrate hardware and software for test systems, including instrumentation, DAQ hardware, off-the-shelf benchtop equipment, and custom hardware.
Apply diagnostic and systems-level troubleshooting methodologies to identify root causes of system, software, or hardware issues.
Implement and maintain automated test frameworks, unit tests, and regression tests to support reliable system evolution.
Interface with and integrate a wide range of communication protocols and interfaces such as RS‑232/422/485, TCP/IP, Ethernet-based fieldbuses such as EtherCAT, and instrument control protocols.
Participate in requirements development, traceability, and documentation to support structured V&V and quality processes.
Collaborate closely with electrical, mechanical, and software engineers to ensure test systems accurately represent real-world operating conditions.
Support commissioning activities, acceptance testing, and ongoing lifecycle support for test infrastructure.

Qualifications

Education: Bachelor’s degree in Electrical Engineering, Controls Engineering, Computer Engineering, or a related field.
Experience: 1+ years of experience in control systems engineering, with a strong emphasis on test and measurement or validation environments.
Demonstrated experience designing and commissioning test stands, automated test equipment (ATE), or experimental systems.
Proficiency in Python and LabVIEW, including development of maintainable, version-controlled code.
Strong working knowledge of verification and validation methodologies, including test planning and execution and requirements tracking such as with a Requirements Traceability Matrix.
Experience with version control systems (e.g., Git) and modern software development workflows.
Working knowledge of unit testing, automated testing, or test-driven development concepts.
Familiarity with industrial and laboratory communication protocols (e.g., RS‑232, TCP/IP, Ethernet-based protocols).
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience: 3+ years of experience in control systems engineering, with a strong emphasis on test and measurement or validation environments.
Experience with advanced architectural concepts, such as an Actor framework
Experience with industrial control platforms such as PLC/PAC systems, real-time controllers, or distributed control SCADA systems, such as Ignition or Wonderware.
Familiarity with publication/subscription based protocols such as OPC UA
Familiarity with instrumentation standards and interfaces (e.g., SCPI, GPIB, USB instruments).
Experience with DAQ systems, high-speed data capture, or synchronization/timing systems.
Exposure to systems integration best practices commonly used by professional control system integrators (e.g., lifecycle documentation, change control, structured testing).
Knowledge of safety-related control concepts, interlocks, or fail-safe system design.
Experience supporting testing in R&D, prototype, or experimental environments.
Familiarity with documentation standards such as test plans, test procedures, verification matrices, and commissioning reports.

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Responsibilities

Build, lead, and grow the Simulation & Synthesis organization, including hiring, mentoring, onboarding, and performance development of technical staff.
Establish enterprise simulation standards, governance, and best practices, including model credibility, verification and validation (V&V), uncertainty management, traceability, and configuration management.
Develop and maintain scalable analysis workflows, infrastructure, automation, and data governance practices that support reproducible and high-quality engineering analysis.
Lead integrated system-level synthesis activities, including trade studies, coupled-effects analysis, budgets, margins, and decision-support artifacts used by Program leadership.
Partner with Program Directors, Systems Engineering, and peer Department Heads to ensure simulation activities are appropriately scoped, prioritized, and aligned to program milestones and decision points.
Drive integration between simulation and testing activities, including test planning, correlation strategies, post-test model updates, and operational profile development.
Define and implement engineering processes and “definition of done” standards for simulation activities across concept development, design, testing, and operations.
Build external partnerships with national laboratories, universities, and industry collaborators to accelerate technical capability development and attract top talent.
Represent Xcimer within technical conferences and modeling communities to establish credibility and strengthen recruiting efforts.

Qualifications

Education: Advanced degree in Engineering, Physics, Applied Mathematics, or related technical field; MS or PhD preferred.

Experience: 12+ years of experience in modeling, simulation, and technical leadership within complex engineered systems.

Demonstrated experience building and leading high-performing technical teams and establishing scalable engineering methods, tools, and processes.

Strong expertise in model credibility, assumptions management, uncertainty quantification, and engineering decision risk assessment.

Experience operating effectively within a matrix organization and collaborating across multidisciplinary engineering and program teams.

Strong written and verbal communication skills with the ability to translate complex technical analyses into clear recommendations for both technical and executive audiences.

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience owning enterprise-level simulation tools, workflows, and standards across multiple technical domains.

Experience with structural analysis, loads and dynamics, vibroacoustics, multi-physics modeling, and model-to-test correlation.

Experience establishing data pedigree and governance practices for simulation inputs such as loads, material properties, environmental conditions, and test datasets.

Experience supporting external customer, regulatory, or government technical review processes.

Recognized technical leadership through publications, invited talks, or contributions to simulation, computational engineering, or applied physics communities.

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Responsibilities

Lead the Laser Engineering department, including hiring, onboarding, mentoring, and performance development of engineering staff.
Define and own the technical roadmap for laser system development, maturation, scaling, and industrial deployment.
Oversee the design, integration, testing, validation, and commissioning of large-scale laser systems with strong emphasis on reliability, manufacturability, repeatability, and operational performance.
Collaborate closely with experimental physics teams to evaluate existing laser architectures, experimental results, and critical design tradeoffs.
Review and assess current laser technologies and architectures to identify technical risks, limitations, opportunities, and areas for improvement.
Drive technical decision-making related to future laser system architectures using experimental data, modeling results, and system-level performance analysis.
Partner cross-functionally with optics engineering, optomechanical engineering, pulsed power, materials science, controls, manufacturing, and systems engineering teams to ensure effective communication and technical alignment.
Translate experimental insights and lessons learned into robust engineering designs, specifications, and scalable production-ready systems.
Lead the transition from prototype and research systems to reliable industrial-grade laser products and infrastructure.
Establish engineering best practices, design review processes, technical documentation standards, and quality expectations for complex laser systems.
Identify technical risks across laser development programs and drive mitigation strategies to support program execution and long-term scalability.
Manage relationships with external vendors and partners supplying laser components, hardware, and subsystems.
Support system troubleshooting, root cause investigations, and corrective action implementation during development and operations.
Align laser engineering priorities with company strategy, schedules, budgets, and organizational objectives in partnership with executive leadership.

Qualifications

Education: Advanced degree in Engineering, Physics, Optical Engineering, Electrical Engineering, Mechanical Engineering, or a closely related technical field; MS or PhD preferred.

Experience: 10+ years of experience designing, developing, and delivering industrial laser systems.

Prior experience leading engineering teams, technical organizations, or major technical programs.

Strong understanding of laser system architectures, integration, and performance considerations.

Experience scaling laser systems from laboratory or R&D environments into industrial or production settings.

Strong communication, leadership, and cross-functional collaboration skills.

Ability to operate effectively within a rapidly evolving and fast-paced organization.

Demonstrated ability to balance hands-on technical leadership with strategic organizational oversight.

Ability to quickly learn and adapt to new laser technologies and system architectures.

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Direct experience with pulsed gas laser systems.

Experience with large-scale or high-energy laser architectures.

Familiarity with high-power laser operations and industrial laser infrastructure.

Experience supporting manufacturing, integration, commissioning, or field deployment activities.

Experience working within fast-growth startup or scale-up engineering environments.

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Responsibilities

Build, lead, and grow the Nuclear Engineering Department, including hiring, onboarding, mentoring, and performance development of engineering staff.

Develop career paths and technical leadership pipelines for nuclear engineers while fostering a culture of technical rigor, collaboration, safety, and continuous improvement.

Establish, document, and maintain nuclear engineering standards, methods, and best practices across concept development, design, testing, and operations.

Define and maintain the nuclear design basis for Xcimer facilities and programs, ensuring assumptions, analyses, and requirements support performance, safety, and regulatory objectives.

Partner with Program Directors and Managers to ensure nuclear engineering activities are appropriately scoped, resourced, prioritized, and scheduled.

Identify nuclear engineering risks early and collaborate cross-functionally to develop and implement mitigation strategies.

Ensure disciplined execution of core nuclear engineering activities, including radiation transport and shielding analysis, activation analysis, source term definition, uncertainty analysis, and support for radiological safety and hazards analysis.

Collaborate closely with Systems Engineering, Facilities, Test, Operations, ES&H, and peer engineering departments to integrate nuclear engineering considerations into system architectures, facility designs, and operational procedures.

Define and execute a long-term roadmap for nuclear engineering capability growth, including external partnerships with national laboratories, academic institutions, and industry collaborators.

Represent Xcimer in technical forums and within the broader nuclear engineering community to build technical credibility and attract top-tier talent.

Qualifications

Education: Advanced degree in Nuclear Engineering or closely related technical field; PhD strongly preferred.
Experience: 15+ years of experience in nuclear engineering, including senior technical leadership responsibilities.
Demonstrated experience building, mentoring, and leading high-performing technical teams.
Strong foundation in radiation physics, nuclear engineering fundamentals, and analytical methods.
Experience with deterministic and Monte Carlo neutron/photon transport methods.
Experience using nuclear engineering analysis tools such as MCNP, OpenMC, or equivalent software.
Experience planning and managing technical work, including schedules, budgets, and performance metrics.
Experience operating effectively within matrix organizations and multidisciplinary technical environments.
Excellent written and verbal communication skills with the ability to communicate complex technical concepts to both technical and non-technical audiences.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience within fusion energy, high-radiation facilities, or other advanced energy systems.

Experience collaborating with national laboratories, universities, or large multi-institution technical programs.

Experience establishing engineering standards and improving technical rigor across organizations.

Publication record or recognized technical leadership within the nuclear engineering community.

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As a Director of Optical Engineering you will lead the department which staffs the design, development, qualification and commissioning of state-of-the-art UV laser optical systems for laser-driven inertial fusion. This role combines deep technical expertise in optical engineering with organizational leadership responsibility for the Optical Engineering team. You will be responsible for building and leading a high-performing team of optical engineers while providing technical direction for the design, analysis, integration, and validation of laser beamlines, diagnostics, optical coatings, adaptive optics systems, and other critical optical subsystems.

As a member of the engineering leadership team, you will partner closely with scientists, systems engineers, optical physicists, opto-mechanical engineers, and program leadership to ensure that the optical architectures, technical roadmaps, risks, and delivery of optical systems, is accomplished in accordance with the requirements of Xcimer's Fusion and Directed Energy missions. We are looking for a leader who combines exceptional technical depth with strong people leadership, execution discipline, and a passion for solving some of the world's most challenging engineering problems, while very comfortable working in a matrix organization.

Responsibilities

Organizational Leadership

Build, lead, mentor, and grow the Optical Engineering team through hiring, coaching, performance management, and career development.
Establish team goals, priorities, staffing plans, and organizational capabilities aligned with company objectives.
Develop engineering processes, design standards, documentation practices, and quality expectations for the optical engineering organization.
Foster a culture of technical excellence, accountability, collaboration, and continuous improvement.
Partner with executive leadership to develop long-term optical engineering strategy and organizational growth plans.

Technical Leadership

Oversee the development of optical architectures for laser beamlines, diagnostics, adaptive optics systems, beam transport systems, and related optical subsystems.
Work with science, systems engineering, and laser teams to derive, allocate, and manage optical system requirements.
Provide technical oversight for optical design, tolerancing, alignment strategies, and system performance analyses.
Chair reviews of optical designs and analyses, ensuring technical rigor and adherence to performance requirements.
Guide development of active beam control systems including adaptive optics, beam stabilization, and tracking systems.
Ensure that requirements and specifications for optical components, coatings, imaging systems, cameras, sensors, and precision optical assemblies are established in compliance with the Xcimer Product Development Process.
Drive resolution of complex optical performance issues through modeling, experimentation, root-cause analysis, and corrective actions.
Oversee optical system integration, alignment, verification, validation, and commissioning activities.

Cross-Functional Collaboration

Partner with optomechanical engineering teams to optimize system performance, manufacturability, alignment accessibility, and maintainability.
Collaborate with optical physicists, electrical engineers, controls engineers, and software engineers to develop integrated laser and diagnostic systems.
Support supplier selection, technical evaluations, and strategic relationships with optical component vendors and manufacturing partners.
Work closely with program management to identify risks, develop mitigation plans, and ensure successful execution of program milestones.
Present technical status, risks, and recommendations to engineering leadership and executive stakeholders.

Qualifications

Education: MS degree in Optical Engineering or a related technical discipline.
Experience: 10+ years of experience in optical engineering, including optical design, analysis, integration, and testing of complex optical systems.
Leadership: 15+ years of experience leading technical teams and managing engineering organizations.
Demonstrated expertise using optical design software such as Zemax (preferred), CODE V, or equivalent tools.
Strong experience with computational analysis tools such as MATLAB, Python, or similar engineering software.
Deep understanding of optical design methodologies, optimization techniques, and performance metrics for imaging and laser systems.
Experience with optical tolerancing, fabrication specifications, statistical performance analysis, and alignment sensitivity assessments.
Experience integrating and aligning complex optical systems using instrumentation such as theodolites, autocollimators, laser trackers, interferometers, and related metrology equipment.
Experience performing optical metrology and characterization, including interferometric measurements, surface quality assessment, scatter characterization, and precision inspection techniques.
Demonstrated ability to lead multidisciplinary engineering efforts from concept through integration and testing.
Excellent communication, leadership, and organizational skills.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Ph.D. degree in Optical Engineering, Optical Science, Physics, or a related discipline.
15+ years of experience in optical system design, optimization, tolerancing, integration, and precision alignment.
Experience working in a Matrix Organization delivering multiple projects and programs in parallel.
Experience leading optical engineering organizations supporting large-scale technical programs.
Experience designing adaptive optics systems and beam pointing stabilization systems.
Experience performing high-fidelity physical optics modeling and wavefront propagation analyses in both near-field and far-field regimes.
Experience with high-energy laser systems and deep ultraviolet (UV) optical systems.
Experience developing comprehensive end-to-end optical system models and performance budgets.
Experience defining and flowing requirements from system-level architectures to subsystem and component specifications.
Experience supporting development of advanced scientific, aerospace, defense, fusion, or directed-energy systems.
Demonstrated success scaling engineering teams in fast-paced, high-growth technical organizations.

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Responsibilities

Own electrical architecture and implementation for assigned subsystems, translating system and control requirements into safe, compliant electrical designs.
Design and own signal distribution and protection schemes, including grounding, shielding, fault protection, and electrical safety considerations.
Lead the design of control panels, cabinets, and electrical packaging, with a focus on robustness, serviceability, and scalability.
Own cable and harness architecture, including interface definition, routing strategy, and documentation.
Develop and maintain electrical‑focused P&IDs and interface diagrams describing power, signal, interlock, and utility interfaces.
Use P&IDs as a cross‑disciplinary communication tool between Electrical, Controls, Mechanical, Safety, and Operations.
Ensure consistency between P&IDs, schematics, wiring diagrams, harness drawings, and control I/O definitions.
Produce complete, build‑ready electrical design packages, including P&IDs, schematics, wiring diagrams, harness drawings, ICDs, BOMs, and supporting documentation.
Support design reviews, hazard analyses, safety reviews, system integration, commissioning, and bring‑up activities.
Lead electrical failure analysis and root‑cause investigations, driving corrective actions and continuous improvement.
Design electrical systems, panels, harnesses, and documentation in accordance with applicable internal and industry standards, including IPC/WHMA‑A‑620, IPC‑A‑610, IPC‑J‑STD‑001, UL 508A, NFPA 70/79, and ANSI/ISA‑5.1 for P&IDs.

Qualifications

Education: Bachelor’s degree in Electrical Engineering or equivalent.
Experience: 3+ Years of Experience in Electrical Engineering.
Demonstrated experience owning electrical system design for complex hardware systems.
Strong background in power distribution, protection, grounding, and electrical safety.
Experience designing control panels, cabinets, and electrical packaging.
Experience creating and maintaining electrical P&IDs, process diagrams, or electrical interface diagrams for complex systems.
Familiarity with common offerings from large electrical distributors like Rockwell Automation, Siemens, and/or Beckhoff.
Ability to produce clear, build‑ready electrical documentation.
Familiarity with industry standards applicable to electrical systems, including cable and wire harness standards (IPC/WHMA‑A‑620), electrical panel standards (UL 508A, NFPA 70/79), and P&ID standards (ANSI/ISA‑5.1).
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

5+ Years of Experience using P&IDs in safety reviews, commissioning, or operational documentation.
Hands‑on experience with harness and cable design.
Experience supporting system integration, commissioning, and failure analysis.
Background working closely with controls, mechanical, and systems engineering teams.

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As an Laser and Optics Controller for Phoenix, you will apply your technical and operational skills to operating, troubleshooting, and maintaining the laser and optical components in a state-of-the-art laser system. You will learn from our laser and optics subject matter experts and be one of the first to formally qualify to operate the system. Once qualified, you will serve as Beamline Controller – interacting with our control interface and working with the Shot Director to execute critical procedures in our laser experiment operations. During maintenance and upgrade operations, you will also perform hands on work on the system to troubleshoot, perform corrective and preventive maintenance, and execute system upgrades. We are looking for our controllers to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!

Responsibilities

Train and qualify as a Laser and Optics Controller for the Phoenix Laser System
Serve as a Laser and Optics Controller, executing procedures and working in support of the Shot Director, during laser experiment operations
Develop procedures and other shot operations infrastructure for the Phoenix pulsed power system
Troubleshoot performance anomalies both during shot operations and during maintenance activities
Perform hands-on integration and maintenance work with the Phoenix team during maintenance and upgrade windows

Qualifications

Education: Masters or Bachelors degree in optics, physics or other related discipline
Experience manufacturing or operating optical hardware
Must be willing to work on a set 8-hour shift with set start and stop times. Must also be willing to work overtime on non-shift hours during critical times.
Ability to read and interpret basic optical specifications of COTs and Custom components.
Understanding of coating purpose and limitations, including reflectivity, bandwidth, angle sensitivity, and damage threshold.
Understanding of appropriate optic cleaning techniques based on optic type and coating, including when cleaning is acceptable and when it should be avoided.
Ability to handle delicate components and performing precise adjustments.
Basic understanding of physical processes such as absorption, gain, scattering, and saturation.
Proficiency with two aperture beam alignment techniques.
Ability to manipulate beam propagation, for example recollimating an expanding beam or adjusting focus position.
Understanding of laser safety principles, including eyesafe wavelengths, exposure limits, and use of laser safety eyewear.
Ability to select optical components based on given specifications, including diameter, coating, flatness, surface quality, and damage threshold.
Ability to follow optical layouts and drawings and translate them into physical setups.
Basic troubleshooting skills to identify misalignment, clipping, ghost reflections, and common optical issues.
Must be able to stoop, kneel, crouch, or crawl, capable of lifting and/or moving up to 50 pounds unassisted for an extended period.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum

Desired

Pulsed power laser experience
Working knowledge of control systems and mechanical/pneumatic equipment

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Xcimer Energy leverages decades of research in inertial fusion energy (IFE) combined with innovative engineering and manufacturing approaches. Our mission is to deploy fusion power plants at scale to meet global decarbonization goals. Xcimer has assembled a team of leaders across fusion science, materials, and manufacturing with a strong track record of execution. Backed by leading investors, Xcimer is uniquely positioned to deliver clean, reliable fusion energy.

This is a full-time, onsite role based at our headquarters in Denver, CO.

As a Optical Coatings Materials Scientist in the Materials & Process Engineering (M&P) Department, you will work closely with the optical and laser systems teams to develop and implement advanced coatings and material solutions for fluorine-resistant environments. This role is hands-on and execution-driven, spanning coating development, materials characterization, and scale-up to production-relevant processes.

You will play a critical role in enabling durable optical performance and system reliability in aggressive chemical environments, directly impacting the core performance of Xcimer’s fusion systems.

Responsibilities

Develop and optimize fluorine-resistant optical coatings for laser-facing components, including mirrors, windows, and diagnostic optics.

Design and evaluate fluorine-compatible material systems for broader system applications (e.g., chambers, fixtures, and exposed hardware).

Work closely with the optics and laser engineering teams to define coating requirements, performance targets, and integration constraints.

Lead hands-on coating deposition efforts, including thin film development, process tuning, and substrate preparation.

Design and execute test plans and Design of Experiments (DOE) to evaluate coating adhesion, durability, chemical resistance, and optical performance.

Perform detailed materials and coating characterization, including microstructural, compositional, and optical property analysis.

Analyze failure modes (e.g., delamination, degradation under fluorine exposure) and drive root cause investigations and corrective actions.

Develop and document coating processes, specifications, and qualification procedures.

Collaborate with internal teams and external vendors to scale coating processes from lab development to pilot and high-volume manufacturing.

Support integration of coatings into system hardware, including validation under relevant operating conditions.

Contribute to the development of experimental infrastructure and coating test platforms within M&P.

Qualifications

Education: PhD in Materials Science, Chemistry, Chemical Engineering, Physics or a closely related field.
Experience: 5–10 years of industry experience in coating development, materials engineering, or related fields.
Demonstrated experience developing optical coatings and/or protective coatings for harsh environments.
Strong understanding of:
- Thin film deposition processes (e.g., PVD, CVD, IBS, ALD, sputtering, evaporation, plasma-based methods)
- Coating adhesion, stress, and durability mechanisms
- Optical coating performance (reflectivity, absorption, damage thresholds)
- Hands-on experience with coating fabrication and processing.
- Hands-on expertise with materials and coating characterization tools, including:
  - Scanning Electron Microscopy (SEM)
  - Transmission Electron Microscopy (TEM)
  - Energy Dispersive X-ray Spectroscopy (EDS/EDX)
  - X-ray Diffraction (XRD)
  - Optical microscopy and profilometry
  - Surface analysis and coating thickness/roughness measurements
  - Strong ability to correlate microstructure, composition, and processing conditions to coating performance
  - Experience designing and executing DOE and structured experiments.
  - Ability to independently troubleshoot complex materials and coating failures.
  - Comfortable working in a fast-paced, multidisciplinary, hardware-focused environment.
  - Execution-focused mindset with the ability to move quickly from concept to validation.
  - Strong collaborator, able to work across optics, materials, and system teams
  - Strong data analysis skills and familiarity with statistical methods.
  - Experience writing technical reports, specifications, and documentation.
  - Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience developing coatings for chemically aggressive environments, particularly fluorine or halogen chemistries.
Background in laser optics, optical coatings, or high-energy laser systems.
Experience transitioning coatings from R&D to pilot or high-volume manufacturing.
Familiarity with scaling coating processes for industrial production.
Experience working with external coating vendors or contract manufacturers.
Knowledge of coating durability testing standards (thermal cycling, chemical exposure, laser damage).
Experience in system-level integration of coatings into hardware environments.
Highly hands-on and experimental, comfortable working in lab and hardware environments.

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Responsibilities

Technical Leadership and System Architecture

Serve as the technical lead for the adaptive optics system, from requirements definition through integration and commissioning
Define system level requirements and performance budgets for fast adaptive optics, including wavefront sensors, deformable mirrors, real time controllers, and diagnostics
Lead trade studies and architecture decisions for high bandwidth, low latency correction systems integrated into laser or photon beamlines
Ensure system designs meet performance, reliability, and operability requirements

Vendor Engagement and Procurement

Lead technical engagement with commercial and research vendors delivering adaptive optics components and subsystems
Develop technical specifications, statements of work, and acceptance criteria for externally supplied hardware and software
Oversee vendor design reviews, factory acceptance tests, and delivery milestones
Act as the primary technical interface for resolving performance, schedule, and integration issues with suppliers

Integration, Test, and Commissioning

Lead assembly, integration, and test of the adaptive optics system within the beamline environment
Define laboratory and in situ test plans to validate performance and closed loop operation
Work closely with beamline, controls, and laser system teams to ensure seamless system integration
Support commissioning activities and transition to reliable operations

Department Growth and Future Management

Establish technical standards, documentation practices, and development workflows for the Adaptive Optics group
Mentor and guide engineers and scientists working on adaptive optics and wavefront control topics
Participate in hiring and onboarding as the group expands

Qualifications

Education: Advanced degree in optics, physics, electrical engineering, or a closely related field
Experience: 8+ years of experience in adaptive optics, wavefront sensing and control, or closely related high speed optical control systems
Demonstrated hands on experience working with laser beams, including propagation, beam quality, wavefront control, and interaction with real optical hardware
Experience developing or integrating adaptive optics specifically for laser-based systems
Proven experience specifying, integrating, and testing fast adaptive optics hardware and real time control systems in laboratory or operational environments
Hands-on experience with deformable mirrors, wavefront sensors, and high bandwidth feedback control
Proven ability to work directly with external vendors on custom optical and electro optical systems
Strong written and verbal communication skills for technical reviews, requirements definition, and cross team coordination
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum

Desired

Highly preferred: experience with directed energy systems, including high power or high intensity laser platforms
Experience delivering custom adaptive optics systems from concept through commissioning
Prior experience mentoring engineers or leading technical teams
Familiarity with real time software, FPGA based control, or low latency computing architectures
Experience in laboratory and operational environments requiring high reliability and uptime

Apply Now

Responsibilities

Work with pulsed power design engineers to generate models of systems and components

Work with a multidisciplinary team to create, optimize and validate models of complex physical processes and phenomena.

Aid in the design of experiments for validation of models against real-world data

Work with design engineers to enhance the workflow from concept to final print based upon optimizations in simulation.

Qualifications

Education: B.S. or M.S.in Mechanical or Electrical Engineering

Experience: 2+ years of experience with field solver/particle-in-cell/circuit simulation codes

Strong communication skills across disciplines and departments

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum

Desired

Proficiency in COMSOL, CST and/or LT-SPICE

Proficiency in solid-modeling software, e.g. SolidWorks or NX

Strong knowledge of electromagnetic field principles

Mechanical design skills – knowledge of GD&T principles a plus

Proficiency with Python and/or MATLAB. Experience with VBA and Java a plus

Apply Now

Responsibilities

Optimize beam efficiency and energy deposition on target

Lead design, fabrication, and testing of cathode systems across multiple emitter technologies (explosive emission, thermionic, photocathodes)

Design and optimize hibachi foil/anode grid structures for beam transport efficiency

Lead experimental campaigns end-to-end

Develop and validate cathode and beam transport models (analytical, PIC, SPICE) to guide design decisions; roughly equal balance of modeling and experimental work

Operate and maintain UHV vacuum systems (target < 10^-9 Torr) including bakeout, leak checking, and pumping systems

Survey prior art on emitter technologies, beam transport, and cathode physics

Own experimental program documentation: test reports, design records, operating procedures, and data management

Manage hardware procurement, BOM tracking, and vendor relationships for cathode subsystems

Interface with potential commercial emitter suppliers on procurement, packaging, and quality

Support integration of cathode systems into larger diode and laser architectures

Qualifications

Education: PhD in physics, electrical engineering, or closely related field (MS with exceptional relevant experience considered)
Deep expertise in beam diagnostics (Faraday cups, beam imaging, energy analysis, calorimetry)
Hands-on experience with vacuum electronics and electron-beam generation
Able to independently design experiments, interpret results, and write up findings clearly
Experience building and commissioning complex experimental systems end-to-end (mechanical, electrical, vacuum, controls)
Familiarity with high-voltage pulsed power systems (100 kV+)
Proficiency with lab instrumentation (SMUs, oscilloscopes, HV power supplies)
Comfortable working across mechanical, electrical, and physics domains in a small team
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Direct experience with explosive emission, or cold cathode technologies

Familiarity with semiconductor fabrication processes

Experience with PIC or beam optics simulation codes (e.g., Chicago, CST, COMSOL)

Background in beam transport optimization

Track record of thorough technical documentation and hardware program management (procurement, scheduling, vendor coordination)

Background in excimer laser or inertial fusion energy systems

Apply Now

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion!

This is a full-time, onsite role based at our headquarters in Denver, CO.

As a Senior Stray Light Optical Engineer, you will be the primary technical authority on non-sequential ray tracing and stray light mitigation. Your work will focus on modeling and designing complex optical layouts to identify and mitigate ghosts, hot spots, fringing effects, and other parasitic light paths that could degrade system performance or cause optical damage.
In this highly collaborative role, you will work closely with sequential optical designers, opto-mechanical engineers, material scientists, and optical systems engineers. You will implement mechanical feature models (e.g., baffles, beam dumps) directly into non-sequential software to validate their effectiveness. You will also write custom scripts to automate complex analyses and process large datasets, ensuring our high-energy DUV systems operate safely and efficiently.

Responsibilities

Perform comprehensive non-sequential ray tracing (primarily using FRED software) to analyze stray light, ghost reflections, scattering, and diffraction in high-energy DUV laser systems.

Identify and mitigate high-fluence "hot spots" and fringing effects to prevent optical damage and ensure system longevity.

Implement and evaluate mechanical feature models (such as baffles, apertures, and beam dumps) within non-sequential environments to actively mitigate stray light.

Write and maintain custom scripts (e.g., Python, MATLAB, or FRED script) to automate ray trace simulations, process large datasets, interface to other analysis tools and quantify system-level signal degradation.

Collaborate cross-functionally with sequential optical designers to optimize system layouts for stray light performance.

Work closely with opto-mechanical engineers to design and validate physical stray light mitigation hardware.

Partner with material scientists to evaluate Bidirectional Scattering Distribution Functions (BSDF/BRDF), surface roughness, and specialized UV-resilient absorptive coatings/materials.

Collaborate with Optical Systems Engineers to ensure stray light requirements are defined, met, and verified at the system level for ICF applications.

Qualifications

Education: B.S. or M.S. degree in Optical Engineering, Physics, or a closely related field.
Experience: 5+ years of dedicated experience in stray light analysis and non-sequential optomechanical modeling.
Expert-level proficiency in non-sequential optical design software, with a strong preference for FRED.
Demonstrated experience writing scripts to automate optical analysis and process ray trace data.
Strong understanding of stray light mitigation techniques, including the implementation of mechanical features (baffles, beam dumps) in optical models.
Solid foundation in physical optics, scattering (BSDF/BRDF), and diffraction.
Proven ability to work in a cross-collaborative environment with multi-disciplinary engineering teams.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Ph.D. in Optical Engineering, Physics, or related field.

8+ years of experience in stray light analysis for high-energy laser systems or deep UV (DUV) applications.

Experience with Laser Induced Damage Thresholds (LIDT) and material fluorescence in the DUV regime.

Specific experience working on laser systems for Inertial Confinement Fusion (ICF) or similar high-fluence beam delivery systems.

Familiarity with stray light measurement instrumentation (e.g., scatterometers) to correlate empirical data with simulation models.

Experience importing and managing complex CAD geometry within FRED or other non-sequential optical simulation environments.

Apply Now

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion!
This is a full-time, onsite role based at our headquarters in Denver, CO.
As a Senior Platform Engineer you will design and ship the systems, services, and paved-path tooling that let researchers and engineers move fast. The platform spans data analysis pipelines, the data warehouse, dashboards, research code environments, and the friendly interfaces that expose HPC simulation to non-specialists: a broad surface where great engineering directly accelerates discovery.
This is a hands-on, high-impact role. You will architect and write systems, treat internal tooling as a product with real users, mentor junior engineers, and make deliberate tradeoffs between speed and robustness in an R&D environment where both matter. You'll work closely with physicists, controls engineers, and software architects to turn hard research problems into reliable, reusable infrastructure.
In this role, you will build the platform behind Xcimer's path to commercially viable inertial fusion energy. You'll let PhDs and engineers spend their time on physics and engineering instead of infrastructure, with direct access to simulation, data, and analysis through tools that work reliably. Every researcher's productive day depends on the platform you build. This is a strategic leadership position tied directly to the company's mission. We are looking for our engineers to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!

Responsibilities

Internal Developer Platform

Build and own the internal developer platform as a product, so researchers and engineers can provision what they need and start work quickly.

Design and build the services behind data analysis pipelines, the data warehouse, dashboards, research code environments, and the web apps that expose HPC simulation to non-specialists.

Extend Open OnDemand and related portals, and build what's missing where off-the-shelf tools fall short.

Own AI developer tooling, its budget, and provisioning workflows.

Set and maintain standards that give engineers autonomy while keeping the platform coherent and governable.

Systems & Software Engineering

Architect and write platform services, control planes, APIs, and data-pipeline frameworks.

Build reusable components and set software standards that match the needs of active R&D projects.

Translate requirements from Physics, Engineering, and Controls teams into systems that scale and stay maintainable.

Treat reliability, observability, and cost as design requirements.

HPC & Infrastructure

Provide the platform layer over HPC clusters, job scheduling, and distributed filesystems so researchers can run simulation and analysis themselves.

Build and maintain secure cloud infrastructure (AWS/GCP/Azure), managed as infrastructure-as-code.

Build observability, alerting, and incident-response systems across on-prem and cloud resources.

Manage cloud costs proactively through architecture choices, reserved capacity, and observability.

Lead migrations, upgrades, and modernization with minimal disruption to active experiments.

Documentation & Mentorship

Write clear documentation, runbooks, and operational procedures so others can operate and extend the platform.

Mentor junior platform engineers and the cross-functional engineers who build on the platform.

Set technical direction for infrastructure as code, observability, and system resilience.

Qualifications

Education: Bachelor's degree in Computer Science, Engineering, Physics, Applied Mathematics, or related field; advanced degree preferred.

Experience: 7+ years of experience in platform, infrastructure, or software engineering, including building internal tools or platforms used by other engineers.

Strong software engineering fundamentals. Proficiency in Python, Rust, and/or C++.

Experience building internal platforms or tooling that measurably improved team productivity.

Hands-on experience with Linux and infrastructure automation (Ansible, Terraform, or equivalent).

Experience with cloud infrastructure (AWS/GCP/Azure). Familiarity with HPC clusters and job scheduling is a plus.

A track record of designing systems for reliability, observability, and scale.

Experience with containerization and orchestration (Kubernetes, Docker, or similar).

Experience mentoring engineers and leading cross-functional projects.

Clear communication, including explaining technical tradeoffs to non-technical colleagues.

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum

Desired

Experience building data platforms, data warehouses, or analytics and dashboard infrastructure.

Prior experience in scientific computing or research environments.

Familiarity with Open OnDemand or similar research computing portals.

Experience with secure enclave architectures, identity management (OIDC, LDAP), or export-controlled data.

Domain background in manufacturing, experimental physics, or fusion energy. We don't require it — strong generalists ramp quickly here — but a head start is welcome.

Experience managing and optimizing cloud infrastructure.

Apply Now

Responsibilities

Optimize beam efficiency and energy deposition on target

Lead design, fabrication, and testing of cathode systems across multiple emitter technologies (explosive emission, thermionic, photocathodes)

Design and optimize hibachi foil/anode grid structures for beam transport efficiency

Lead experimental campaigns end-to-end

Develop and validate cathode and beam transport models (analytical, PIC, SPICE) to guide design decisions; roughly equal balance of modeling and experimental work

Operate and maintain UHV vacuum systems (target < 10^-9 Torr) including bakeout, leak checking, and pumping systems

Survey prior art on emitter technologies, beam transport, and cathode physics

Own experimental program documentation: test reports, design records, operating procedures, and data management

Manage hardware procurement, BOM tracking, and vendor relationships for cathode subsystems

Interface with potential commercial emitter suppliers on procurement, packaging, and quality

Support integration of cathode systems into larger diode and laser architectures

Qualifications

Education: PhD in physics, electrical engineering, or closely related field (MS with exceptional relevant experience considered)
Experience: 5+ years of industry experience
Deep expertise in beam diagnostics (Faraday cups, beam imaging, energy analysis, calorimetry)
Hands-on experience with vacuum electronics and electron-beam generation
Able to independently design experiments, interpret results, and write up findings clearly
Experience building and commissioning complex experimental systems end-to-end (mechanical, electrical, vacuum, controls)
Familiarity with high-voltage pulsed power systems (100 kV+)
Proficiency with lab instrumentation (SMUs, oscilloscopes, HV power supplies)
Comfortable working across mechanical, electrical, and physics domains in a small team
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Direct experience with explosive emission, or cold cathode technologies

Familiarity with semiconductor fabrication processes

Experience with PIC or beam optics simulation codes (e.g., Chicago, CST, COMSOL)

Background in beam transport optimization

Track record of thorough technical documentation and hardware program management (procurement, scheduling, vendor coordination)

Background in excimer laser or inertial fusion energy systems

Apply Now

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion!
This is a full-time, onsite role based at our headquarters in Denver, CO.
As a Senior Scientific Software Engineer, you lead the design and development of software systems that support scientific analysis, visualization, machine learning, and internal applications. You will be part of a high-performing software team working closely with simulation and experimental groups to turn data, models, and control systems into reliable, scalable tools that accelerate R&D.
This is a senior, hands-on role with ownership over technical direction and system architecture. A physics background is not required, but you should be comfortable operating in data-driven, research-oriented environments and translating evolving requirements into production-quality software. We are looking for our engineers and scientists to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!

Responsibilities

Software Architecture & Design

Architect, develop, and maintain Python-based systems for data analysis, visualization, and internal workflows.
Lead technical design from early research prototypes through production deployment.
Partner with researchers and engineers to translate experimental and modeling requirements into scalable software solutions.
Establish best practices for testing, documentation, CI/CD, and deployment in containerized environments.

Data Pipelines & Analysis

Design and support data processing pipelines, including large-scale and streaming datasets.
Build interactive, multi-user tools for exploratory data analysis and visualization.
Contribute to machine learning systems, including model integration, training pipelines, and support for real-time or adaptive control workflows.

Performance & Integration

Integrate Python applications with high-performance computing (HPC) or legacy codes (C++/Fortran) and distributed compute systems.
Optimize performance-critical components using parallel, GPU-accelerated, or distributed computing techniques as appropriate.

Technical Leadership

Mentor engineers and provide technical leadership across projects.
Serve as a senior member of the software team, setting direction and raising the bar for technical quality.

Qualification

Education: Bachelor's degree in Computer Science, Engineering, Physics, Applied Mathematics, or related field; advanced degree preferred.

Experience: 7+ years of professional software development experience in technical, data-intensive, or research-driven environments.

Expert-level Python skills and strong experience with numerical and data libraries (NumPy, SciPy, Pandas, Matplotlib, Scikit-Learn).

Demonstrated ability to design and own complex software systems under ambiguous or evolving requirements.

Experience collaborating closely with non-software domain experts and supporting experimental or simulation workflows.

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience working with 3D geometry or CAD data (STEP, IGES, STL, BREP) and related libraries (OpenCASCADE, VTK, PyVista).

Familiarity with structured scientific data formats (HDF5, NetCDF, VTK, custom binary formats).

Experience interfacing Python with C/C++ or Fortran (pybind11, Cython, f2py, nanobind).

Strong background in parallel, GPU, or distributed computing (MPI, CUDA, OpenACC).

Experience with machine learning systems in production environments.

Background supporting real-time systems, feedback loops, or adaptive control applications.

Experience with containerization and orchestration (Docker, Apptainer, Kubernetes) as well as HPC environments and job schedulers (SLURM).

Apply Now

Xcimer Energy builds on decades of research in Inertial Fusion Energy (IFE), combined with a groundbreaking new laser architecture, to accelerate the deployment of fusion power plants. Our mission is to deliver clean, limitless fusion energy fast enough to meet global decarbonization goals. Xcimer has assembled a world-class team spanning tough tech, fusion science, and advanced manufacturing, with a proven track record of rapid execution. Backed by leading investors, we are uniquely positioned to bring inertial fusion power from prototype to reality. Join us in powering a better world with fusion.
This is a full-time, onsite role based at our headquarters in Denver, CO.
As Senior Thermal Analyst, you will lead the thermal and CFD analysis across Xcimer’s Energy and Defense programs. You will evaluate cooling architectures, analyze steady‑state and transient heat loads, and provide thermal insight that drives system‑level design decisions. You will work closely with design engineers and fellow analysts to ensure thermal behavior is fully integrated into cross‑disciplinary workflows including component design, architecture trades, performance optimization, and experimental validation. You will generate traceable analysis documentation, participate in peer reviews, and provide analysis guidance to design engineers and junior analysts. As hardware progresses from prototype to integrated testing you will support troubleshooting, test correlation, and rapid iteration. We are looking for engineers who enjoy building systems from concept through commissioning and thrive in fast-paced manufacturing environments.

Responsibilities

Lead thermal and CFD analyses for cooling systems, gas‑flow pathways, and fusion chamber components.

Build and maintain transient and steady‑state thermo‑fluid models including conduction, convection, radiation, turbulent flow, and compressible gas dynamics.

Validate CFD and thermal models using analytical techniques, experimental data, and multi‑physics correlations.

Produce clear, accurate, and traceable analysis documentation for design reviews, architecture trades, and test readiness.

Conduct peer reviews of thermal/CFD analyses from other analysts; maintain best practices for modeling, assumptions, margins, and documentation.

Collaborate with analysts and design engineering teams to ensure thermal results are fully integrated into component and system designs.

Support prototype builds and test operations by diagnosing thermally‑related issues, supporting root‑cause investigations, and recommending corrective actions.

Contribute to the development of internal thermal/CFD workflows, correlation standards, and analysis verification/validation processes.

Qualifications

Education: B.S. in Mechanical Engineering, Aerospace Engineering, Nuclear Engineering, or related field.

Experience: 8+ years of thermal‑fluid, CFD, or heat‑transfer analysis experience supporting engineered hardware (Energy, Aerospace, Laser Systems, HVAC.).

Expert proficiency with commercial CFD tools (e.g., STAR‑CCM+, Ansys Fluent) and experience with CFD verification/validation.

Demonstrated experience with turbulent flow modeling, compressible and incompressible fluids, convection and radiation heat transfer, and cooling system design.

Strong fundamentals in classical heat transfer and thermo‑fluids, including hand calculations and closed‑form thermal analysis methods.

Demonstrated experience supporting hardware test campaigns, thermal instrumentation, flow diagnostics, and correlating models with experimental data.

Must be a U.S. citizen or national, U.S. permanent resident (Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

M.S. or advanced degree in Mechanical Engineering, Aerospace Engineering, Nuclear Engineering, or related field.

Hardware selection and/or design experience: fans, pumps, heat exchangers, piping, and other supporting equipment.

Experience developing multi‑physics simulation environments involving thermal, flow, mechanical stress using simulation tools (SimCenter, COMSOL, Abaqus, etc.).

Experience with high‑temperature systems, transient pulsed heat deposition, gas lasers, or fusion‑related thermal environments.

Familiarity with engineering materials, manufacturing processes, cooling strategies, and how they affect thermal performance and reliability.

Familiarity with scripting languages (Python, MATLAB, VBA) for automating workflows and post‑processing results.
CAD/PLM experience (NX, Teamcenter).

Apply Now

Responsibilities

Build and maintain data pipelines and integrations across CAD/CAE, PLM, ERP, procurement, and other business systems, closing gaps in data availability across the org and turning that data into information that drives business decisions.

Implement monitoring, alerting, and error-handling practices so data pipeline failures are caught early and resolved with minimal disruption.

Convert defined requirements and user stories from product and business stakeholders into working tools, dashboards, and demos. Discover and streamline existing systems, workflows, and processes through automation and improved data pipelines to increase operational efficiency.

Collaborate across domains such as business operations, manufacturing, supply chain, design engineering, experimental physics, computation, and controls to deliver fit-for-purpose tools.

Drive clear, well-documented process and tool rollouts, capturing the reasoning behind design decisions, managing change with stakeholders, and building solutions that hold up as business needs and underlying systems evolve.

Support data governance efforts by documenting ownership, lineage, and access requirements as new systems and integrations come online.

Qualifications

Education:  Bachelor’s degree in Data Science, Computer Science, Information Systems, Engineering, or a related field

Experience: 5+ years of experience in Data Engineering for an aerospace, defense, semiconductor, or other advanced manufacturing/R&D company

Proficient in Python and SQL; familiarity with Spark (PySpark/Spark SQL) strongly preferred.

Strong understanding of data modeling, ETL pipelines, relational databases and SQL Experience with the Databricks Lakehouse platform (Delta Lake, Unity Catalog, workflows) and AWS S3 cloud object storage.

Experience building interactive dashboards and visualizations (e.g. Plotly/Dash, Streamlit, or similar)

Proven ability to learn new technical domains quickly and translate complex systems into robust tools

Strong communication, organizational, and documentation skills

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Startup or early-stage company experience

Apply Now

Responsibilities

Own and execute Xcimer’s end-to-end supply chain strategy, spanning sourcing, procurement, materials planning, inventory, logistics, and supplier performance.
Lead, develop, and scale a high-performing supply chain organization, including hiring, development, and performance management.
Strengthen, expand, and maintain a robust supplier ecosystem capable of supporting advanced R&D, low-volume / high-complexity builds, and eventual scale-up to production.
Establish sourcing strategies for critical components, long-lead items, and sole‑source or constrained materials, including make/buy analysis and risk mitigation plans.
Shape program-level decisions by partnering with Engineering to integrate design-for-supply, design-for-cost, and design-for-manufacturability tradeoffs into system-level assessments of economics, schedule, and risk early in development.
Own material planning and readiness for programs and builds, ensuring alignment to integrated master schedules and program milestones.
Implement and continuously improve core supply chain processes, tools, and systems (e.g., PLM-to-ERP handoffs, procurement workflows, inventory controls, supplier quality processes).
Lead supplier negotiations and contracting, balancing cost, schedule, quality, and strategic partnerships.
Establish and track meaningful KPIs (e.g., on-time delivery, inventory turns, cost performance, supplier quality, lead-time reduction) and drive corrective actions as needed.
Manage supply chain risk through formal risk registers, alternate sourcing, strategic buffering, and active issue resolution.
Communicate supply chain risks, tradeoffs, and options to executive leadership, enabling informed prioritization and timely decisions.
Ensure compliance with regulatory, export control, and safety requirements as applicable to the supply base.

Qualifications

Education: Bachelor’s degree in Supply Chain Management, Engineering, Business, or a related field.
Experience: 10+ years of progressive experience in supply chain or procurement including leadership of complex, technical supply chains.
Demonstrated ability to make and influence system‑level decisions under uncertainty, balancing cost, schedule, risk, and scalability.
Demonstrated experience supporting hardware development programs and ideally both low-volume, high-complexity manufacturing environments, and high-volume, low complexity manufacturing environments.
Strong working knowledge of sourcing strategy, supplier development, material planning, inventory management, and cost control.
Proven ability to lead cross-functional initiatives and influence outcomes in fast‑moving, ambiguous environments.
Experience building processes and organizations from early-stage through growth and scale.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience in aerospace, energy, semiconductor, advanced manufacturing, or other highly regulated / precision-driven industries.
Hands-on experience with ERP, PLM, and modern procurement or supplier management tools.
Track record of successfully scaling supply chains from prototype to production.

Apply Now

Responsibilities

Perform hands on maintenance, install and/or repairs of facilities and equipment and electrical infrastructure.
Provide general technical, mechanical and electrical support on the facility and capital equipment.
Source, order, and confirm receipt of project materials.  
Serve as an interface with contractors for electrical, HVAC, security, fire suppression, compressors, backflows, mobile equipment, etc.
Maintain proper LOTO procedures.
Overhead Crane inspection support at various heights up to 60ft.
Operate forklifts as needed.
This is a cross functional position supporting the entire Xcimer team.

Qualifications

Must be able to stoop, kneel, crouch, or crawl, capable of lifting and/or moving up to 50 pounds unassisted for an extended period.
Knowledge of industrial facility infrastructure and maintenance.
Familiarity with OSHA 10/30 industrial safety standards.
Strong mechanical skills, but also a creative and flexible attitude to take on additional responsibilities.
Knowledge of Microsoft Word, excel, project, and PowerPoint programs.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum.

Required

Forklift experience.

Apply Now

Responsibilities

Define, govern, and continuously improve Xcimer’s quality policies, standards, and overall QMS.
Champion a culture of continuous improvement, structured problemsolving, and objective, metricsdriven decision-making.
Ensure visibility to quality risks and lead escalation processes, including containment actions such as stopwork or stopship when necessary.
Lead Quality Engineering, including ownership of the RCCA framework, ensuring investigation rigor and verification of corrective action effectiveness.
Lead Quality Assurance and Quality Control functions, including defining the NCR process, inspection and verification planning, internal audits, and production line validation for special processes.
Oversee Supplier Quality Engineering, partnering with Supply Chain on supplier qualification, monitoring, risk evaluation, audits, and supplier quality performance.
Define and monitor key quality metrics including non-conformance trends, defect rates, rightfirsttime performance, and corrective action timeliness.
Collaborate cross-functionally with Engineering, Manufacturing Operations, Supply Chain, Programs, and Leadership to ensure product integrity and process robustness.
Ensure quality requirements are integrated into change control processes such as ECR/ECO.
Build and develop the Quality organization, aligning staffing with strategic and functional needs.

Qualifications

Education: Bachelor’s degree in engineering, physical sciences, quality, or related discipline; advanced degree preferred.
Experience: 10+ years of overall experience in quality organizations.
5+ years experience leading quality organizations or demonstrated growth in quality responsibilities in complex hardware, systems engineering, manufacturing, aerospace, defense, or similar industries.
Demonstrated experience establishing or scaling a Quality Management System aligned with ISO 9001 principles.
Expertise in structured problem-solving methodologies (RCCA, 8D, Six Sigma, etc.).
Experience leading QA/QC, Quality Engineering, and Supplier Quality functions.
Proven ability to partner across engineering, manufacturing, supply chain, and leadership to influence without direct authority.
Strong analytical skills with experience defining, interpreting, and acting on quality metrics.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience in environments with high iteration velocity, evolving configurations, and rapid scaleup.
Background implementing QMS in regulated or compliance-driven environments.
Certification such as ASQ CQE, Six Sigma Black Belt, or similar.
Experience with special process validation or complex systems manufacturing.

Apply Now

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion!

This is a full-time, onsite role based at our Tucson, AZ facility.

As our Senior Quality Engineer, you will provide technical oversight of quality assurance and quality control activities within our capacitor manufacturing operations. This is a full-time, onsite role based at our capacitor manufacturing site in Tucson, AZ. You will be responsible for developing and validating inspection methodologies, ensuring adherence to quality and reliability standards, analyzing process and product performance data, and leading root cause analysis (RCA) and continuous improvement (CI) initiatives to maintain manufacturing robustness as we scale production of critical energy storage components.

We are looking for a quality leader to apply rigorous analytical thinking, hands-on process discipline, and cross-functional collaboration to help build a world-class quality system as we scale manufacturing.

Responsibilities

Develop, formalize, and implement inspection protocols, technical checklists, and test methodologies for capacitor production.
Implement and maintain process control and monitoring systems to ensure manufacturing stability, including SPC charts, control plans, and critical-to-quality parameter tracking.
Lead structured RCA/RCCA investigations and execute corrective and preventive actions (CAPA) for process deviations, non-conformances, and product failures.
Collaborate closely with Production and Engineering disciplines to resolve process issues, verify manufacturability, and support validation of new designs.
Analyze process and test data to identify trends, reduce variation, and support continuous improvement initiatives.
Conduct internal quality audits to ensure compliance with regulatory, procedural, and manufacturing requirements.
Manage calibration, verification, and maintenance schedules for production, inspection, and metrology equipment.
Perform technical evaluation of incoming raw materials, including dielectric films, foils, terminals, insulation, and potting compounds.
Interface with Procurement and suppliers to resolve non-conformances and drive supplier quality improvements.
Publish monthly dashboards tracing production defects and supplier quality statistics for incoming inventory etc.

Qualifications

Bachelor’s degree in Manufacturing Engineering, Electrical Engineering, Materials Science, Mechanical Engineering, or a related technical discipline.
Minimum of 8 years of quality experience in a manufacturing environment.
Familiarity with ISO 9001, AS9100, or a similar quality management system, including experience supporting or maintaining certification-level quality processes.
Proficiency in statistical analysis, process capability assessment, and data-driven quality methodologies.
Strong analytical and technical problem-solving abilities, with effective communication skills for cross-functional collaboration.
Ability to interpret engineering drawings, specifications, electrical schematics, and test reports.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Prior experience with capacitor manufacturing processes or energy storage component fabrication.
Experience with pulsed-power components or high-voltage energy storage.
Knowledge of vacuum processing, epoxy/potting chemistry, or precision winding equipment.
Lean Six Sigma certification.
Experience with PLM/MES/PDM systems (e.g., SolidWorks, Siemens NX, Teamcenter, Boltline, etc.).

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Responsibilities

Serve as a strategic advisor to the Executive Leadership Team on organizational strategy, leadership effectiveness, workforce planning, succession planning, and culture.
Partner with executive leadership to define, articulate, and reinforce the cultural principles and leadership expectations required for Xcimer’s next stage of growth.
Develop and execute a long-term People strategy that supports Xcimer's rapid growth from R&D through commercialization and multi-site expansion.
Build, mentor, and lead a world-class Human Resources organization spanning HR Business Partners, Total Rewards, HR Operations, Learning & Development, and Employee Experience.
Partner with executive leadership on organizational design, executive coaching, leadership development, and succession planning across the company.
Develop a clear leadership principles framework that drives accountability, collaboration, respectful debate, and decision-making across engineering, scientific, and manufacturing teams.
Lead all compensation, equity, executive compensation, performance management, promotion, and career development programs while ensuring market competitiveness and internal equity.
Develop scalable people systems, policies, and operating rhythms that enable high performance while preserving the company's entrepreneurial culture.
Build cultural “operating mechanisms” including onboarding, feedback systems, recognition programs, manager effectiveness processes, and leadership rituals that create consistency across sites and functions.
Drive workforce planning that develops and retains exceptional technical and business talent.
Champion organizational health through employee engagement, leadership effectiveness, performance management, recognition, and continuous feedback programs.
Monitor cultural health through engagement analytics, manager effectiveness metrics, retention trends, and qualitative insights; proactively identify cultural drift or emerging organizational risks.
Develop programs that reinforce desired cultural behaviors and address gaps—including manager capability building, leadership development, and cross-team collaboration initiatives.
Lead complex employee relations matters, investigations, risk management, and employment law compliance while partnering closely with Legal and executive leadership.
Establish governance mechanisms that reinforce cultural expectations, address misaligned leadership behaviors, and ensure organizational consistency as the company grows and diversifies.
Oversee HR technology, people analytics, reporting, and workforce insights to enable data-driven decision making across the business.
Build and scale programs supporting onboarding, leadership development, manager capability, learning, internal mobility, and succession planning.
Ensure compliance with all federal, state, and local employment regulations while establishing best-in-class governance and HR operational excellence.
Develop annual people budgets, headcount planning models, and organizational investment strategies aligned with company objectives.
Foster a culture grounded in accountability, respectful debate, operational excellence, innovation, and continuous improvement.
Serve as a member of the leadership team, contributing to enterprise strategy, organizational scaling, capital planning, and company performance.
Serve as a visible leader and culture champion across the organization while reinforcing Xcimer's mission and values. ‘
Develop organizational strategies supporting geographic expansion.

Qualifications

Education: Bachelor's degree in Human Resources, Business Administration, Organizational Psychology, or a related field; Master's degree or MBA preferred.
Experience: 15+ years of progressive Human Resources leadership experience, including executive-level leadership in high-growth technology, aerospace, advanced manufacturing, energy, defense, or similarly complex engineering organizations.
Demonstrated experience scaling organizations through periods of rapid growth while building modern HR systems, processes, and leadership capability.
Proven experience partnering directly with executive leadership teams on organizational strategy and executive decision-making.
Deep expertise across organizational design, leadership development, employee relations, total rewards, performance management, HR operations, compliance, and workforce planning.
Experience building and leading high-performing HR teams.
Demonstrated experience shaping culture through leadership development, organizational design, performance systems, and manager capability building.
Strong business acumen with the ability to connect people strategy directly to organizational performance and business outcomes.
Exceptional executive communication, influence, and change management skills with demonstrated success leading enterprise-wide transformation initiatives.
Proven ability to assess cultural health, identify organizational risks, and guide leadership through complex culture-related decisions or interventions.
Experience leveraging HR technology, analytics, and workforce data to improve organizational effectiveness and business performance.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience supporting organizations that have scaled from fewer than 200 employees to more than 1,000 employees.
Experience supporting engineering, scientific research, hardware development, manufacturing, or deep-tech organizations.
Experience designing executive compensation and equity programs for venture-backed companies.
Experience leading organizations through commercialization, manufacturing scale-up, or international expansion.
Familiarity with government contracting, export controls, security-cleared workforces, or regulated industries.
Experience implementing enterprise HRIS, talent management, and people analytics platforms.
Demonstrated success building high-performance cultures within mission-driven organizations.
Experience scaling culture through rapid growth, multi-disciplinary technical teams, and multi-site expansion in engineering-centric environments.

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Responsibilities

Oversee and accountable for the design, planning, and execution strategy of a large-scale, hundred million to billion-dollar class program, ensuring alignment with organizational objectives.

Provide day-to-day leadership to matrixed engineering, science, and operations teams, maintaining technical integrity and quality standards.

Lead fusion system architecture, including the chamber, blanket, and supporting systems from conceptualization and requirement definition to delivery and plant integration.

Direct procurement activities and vendor management for long-lead, critical-path fusion system components.

Manage the transition from conceptual design to detailed design, fabrication, construction, assembly, and commissioning.

Partner with safety, licensing, and regulatory teams to ensure compliance with applicable nuclear, environmental, and industrial safety frameworks.

Manage project budgets, resource allocation, and schedules, implementing proactive risk mitigation and reporting on performance metrics.

Collaborate with senior leadership and stakeholders, communicating program status,
risks, and opportunities for continuous improvement.

Qualifications

Education: BS in physics, nuclear engineering, mechanical engineering, electrical engineering or related technical field.
Experience: 10+ years leading large, complex programs (billion-dollar scale preferred) within a nuclear and engineering-intensive environment (nuclear energy, fusion facilities, particle accelerators, space and defense, etc.)
Proven track record of guiding large-scale technical teams through all phases of technical program delivery.
Experience maturing TRLs from concept through prototype.
Familiarity with power extraction systems in the context of power plant engineering and design.
Familiarity with safety basis development and nuclear safety design and construction frameworks.
Exceptional communication and stakeholder management skills, with the ability to influence at all levels of the organization.
Demonstrated proficiency in one or more core engineering disciplines, such as Nuclear, Aerospace, Power or Mechanical.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Advanced degree (Master’s or Ph.D.) in a relevant engineering field.
Experience with design and construction of one of a kind prototype systems in a nuclear environment.
Familiarity with regulatory and compliance frameworks for high-value engineering projects and with NRC regulations.

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Responsibilities

Lead end-to-end development and delivery of facilities and site infrastructure, including planning, design, procurement strategy, construction oversight, commissioning, and transition to operations.

Accountable for the integrated schedule for facility and site infrastructure delivery, ensuring alignment across engineering design, permitting, procurement, and construction sequencing.

Own the facility and site infrastructure project budget, including budget development, forecasting, and adherence to approved funding, with support from Finance and Program Planning & Controls for cost baseline setup and tracking.

Lead RFP development, evaluation, selection, and management of A/E firms, construction managers, EPC contractors, and other major facility vendors, ensuring adherence to contractual obligations.

Provide leadership and clear direction across multiple disciplines of engineering, manufacturing, supply chain, and individuals assigned to the project(s). Establish priorities, resolve conflicts, and hold individuals accountable for delivering against agreed cost and schedule targets.

Maintain updated cost and schedule forecasts from A/E firms, EPC contractors, and other major contractors to support program reporting and planning.

Define facility development strategy, contracting approach, and capital phasing aligned to program milestones.

Identify project risks early and lead mitigation planning to minimize schedule and cost impacts.

Ensure compliance with applicable codes, environmental regulations, safety standards, and internal governance processes.

Drive permitting strategy and utility coordination (power, water, HVAC, specialized infrastructure) to secure required approvals and capacity without impacting the project schedule.

Drive site readiness and facility integration efforts to ensure smooth transition from construction to operational use.

Qualifications

Experience: 12+ years of experience managing complex facility development, capital construction, or infrastructure projects in energy, aerospace, semiconductor, or similarly technical environments.

Educiation: Bachelor’s degree in engineering, construction management, or related field.

Demonstrated experience managing large capital projects (>$300M) from concept through commissioning.

Experience acting as the owner’s representative managing AE, EPC, or major construction contractors on complex capital projects.

Strong understanding of construction sequencing, contractor management, and cost control practices.

Experience defining and executing large-scale capital delivery strategies, including contract structuring, risk allocation, and contractor oversight for complex infrastructure projects.

Ability to manage budgets, forecasts, and change control processes in partnership with Finance and Program Planning & Controls teams.

Excellent communication and leadership skills with the ability to influence internal and external stakeholders.

Experience managing high-consequence or safety-critical construction environments.

Demonstrated ability to succeed in a matrix organization, driving execution, prioritization, and individual accountability without direct line authority.

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience delivering projects in regulated environments involving environmental review, utility interconnection, or nuclear-adjacent licensing.

Experience coordinating large utility loads (power, cooling water, gas systems) and site infrastructure upgrades.

Experience integrating specialized technical systems (high-voltage, vacuum, radiation-shielded, or process-intensive systems) into large facility builds.

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Responsibilities

Multi-Material & Radiation Hydrodynamics Modeling

Implement and improve multi-material modeling approaches (e.g., interface tracking/capturing, mixture models, or related techniques).
Support coupling of hydrodynamics with radiation transport and other relevant physics modules for various equation of state and opacity models.
Assist in developing robust algorithms for extreme thermodynamic and flow regimes relevant to ICF.

Numerical Methods & Theoretical Development

Develop and analyze certifiably robust, invariant-domain preserving (IDP) numerical methods for computational fluid dynamics with emphasis on multi-material flows.
Contribute to mathematical modeling for multi-material systems relevant to inertial confinement fusion.
Support development of radiation hydrodynamics formulations, discretizations, and stabilization strategies.
Investigate accuracy, stability, and convergence properties of numerical schemes.
Contribute to solving complex inverse and forward problems in high-energy-density physics.

Verification, Validation & Scientific Rigor

Collaborate with Xcimer's verification and validation function to validate multi-material numerics, contributing domain expertise on expected physical behavior.
Contribute multi-material test problems and physical judgment to the shared benchmark suite.
Help ensure multi-material results are reproducible and scientifically credible, in partnership with the team that owns V&V methodology.

Communication & Collaboration

Collaborate closely with physicists, applied mathematicians, and software engineers.
Contribute to internal technical documentation and external scientific publications.
Present findings in technical meetings and contribute to peer-reviewed journal articles and conference papers.

Qualifications

Education: Ph.D. in Mathematics (preferred), Applied Mathematics, Computational Physics, or a closely related field, with a focus on numerical methods for fluid dynamics.
Strong background in numerical analysis for PDEs, particularly for fluid dynamics.
Hands-on experience with invariant-domain preserving (IDP) methods or comparable certifiably robust discretization frameworks for hyperbolic/compressible flow.
Experience with finite element methods and hands-on development using deal.II (strongly preferred) or similar frameworks.
Experience developing scientific software in C++.
Experience working in high-performance computing environments (MPI-based parallelism and large-scale simulations).
Familiarity with multi-material modeling techniques in CFD.
Experience with verification and validation of numerical methods.
Strong written and verbal communication skills, with demonstrated ability to contribute to scientific publications.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Background in radiation hydrodynamics, high-energy-density physics, or related multi-physics domains.
Experience with mathematical modeling for multi-material compressible flows.
Experience coupling hydrodynamics with radiation transport.
Experience contributing to large, research-grade scientific codebases.
Demonstrated ability to balance theoretical rigor with practical computational implementation.

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Responsibilities

Build, lead and grow the Fusion Nuclear Science department, including hiring, onboarding, mentoring, and professional development of scientific staff.

Define and own the scientific roadmap for fusion chamber dynamics, blanket multi-physics, tritium science, and supporting fusion nuclear science domains.

Develop the strategy for scientific tools, modeling frameworks, experimental capabilities, and validation infrastructure.

Oversee scientific analysis, modeling, code development, and experimental programs with strong emphasis on reproducibility, uncertainty quantification, and model credibility.

Translate scientific insights, experimental data, and validated models into design guidance for engineering teams responsible for fusion system architecture.

Collaborate closely with the engineering and operations divisions, and with other science departments, to ensure strong communication and alignment.

Evaluate emerging scientific opportunities and integrate advances from academia, national laboratories, and international fusion programs.

Manage relationships with external laboratories, university collaborators, and vendors providing modeling tools, experimental facilities, or other fusion nuclear science scope.

Establish department‑wide scientific best practices, documentation standards, review processes, and quality expectations appropriate for industrial fusion systems.

Identify key scientific risks across fusion nuclear science programs and drive mitigation strategies supporting execution and long‑term scalability.

Support system troubleshooting, root‑cause investigations, and scientific review of failures or anomalies encountered in development or experimental operations.

Align fusion nuclear science priorities with company strategy, program schedules, resource constraints, and commercialization goals in partnership with executive leadership.

Qualifications

Education: PhD in Nuclear Science, Nuclear Engineering, Nuclear Physics, or a closely related field.
Experience: 12+ years of experience in analysis, simulation, experimental R&D, or technology development for complex nuclear or fusion systems under extreme thermal and radiation environments.
Leadership: 6+ years in leadership of multidisciplinary scientific or R&D organizations.
Deep experience with nuclear analysis tools (e.g., MCNP), multi‑physics simulation software (e.g., COMSOL, ANSYS), and reactor thermohydraulic codes (e.g., RELAP, MELCOR).
Experience designing and executing experiments that raise component or system technology readiness.
Proven record of mentoring and growing high-performing technical teams.
Strong publication and scientific leadership record.
Ability to operate effectively within a rapidly evolving organization transitioning from startup to industrial scale.
Ability to balance hands‑on scientific leadership with high‑level strategic direction and organizational oversight.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience in fusion chamber research, blanket multi-physics, and tritium fuel cycle analysis.

Familiarity with fusion safety and regulatory requirements.

Experience in the commercial nuclear industry or fusion experimental facilities.

Knowledge of tritium handling systems, molten salt technologies.

Familiarity with fusion plant design and commercialization efforts.

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The Head of Diagnostics Physics (Imaging and Spectroscopy) department provides strategic, technical, and organizational leadership for all diagnostic systems supporting practical laser fusion power plants. This role oversees scientific and experimental efforts in optical, X‑ray, and neutron imaging and spectroscopy, including laser beam diagnostics, diagnostics of plasmas, imaging of highly turbulent gas media, backlighting of fusion targets, and advanced fusion‑relevant measurement technologies.
This leader will own the execution and continuous improvement of diagnostic capabilities, ensuring that imaging and spectroscopy systems reliably support program objectives. Responsibilities include developing next generation imaging and spectroscopy concepts, validating technologies through experimental work, maturing promising approaches from academia and national laboratories, and ensuring that cutting edge diagnostics translate into accurate models, reliable measurements, and actionable design guidance for future fusion systems.

The successful candidate will recruit, mentor, and develop multidisciplinary scientific teams; establish department wide best practices; and drive the maturation of diagnostics from concept to industrializable systems. This role partners closely with laser architects and scientists, target design teams, pulsed power and nuclear groups, manufacturing, operations, and other stakeholders. A key objective is to deeply understand program-defined diagnostic requirements across all subsystems of a fusion power plant: constraints, schedules, tradeoffs, alternative solutions, and derisking experiments, and to build and lead a world-class experimental science organization capable of meeting these needs while continuously evaluating emerging technologies for rapid integration.

Responsibilities

Build, lead, and scale the Diagnostics Physics department, including hiring, onboarding, mentoring, and developing exceptional scientific talent.

Learn and maintain a system-wide understanding of program-defined diagnostic requirements across laser science and engineering, target design, pulsed power, nuclear science, manufacturing, operations, and systems architecture.

Build and maintain scientific models, analysis tools, simulation frameworks, and validation infrastructure supporting all imaging and spectroscopy activities.

Ensure all imaging and spectroscopy systems establish accurate calibration standards, verified response functions, and traceable performance metrics throughout their lifecycle.

Drive design requirements that guarantee diagnostic instruments can survive and operate reliably in expected environments, including high-radiation fields, electromagnetic interference, neutron bombardment, vacuum conditions, and mechanical/thermal loads.

Partner with Controls and DAQ teams to enable robust remote configuration, command, synchronization, and data readout for all diagnostic systems.

Maintain awareness of emerging opportunities in optical, X-ray, neutron, and plasma diagnostics; identify promising academic or laboratory technologies, and collaborate with program leads, maturing those selected for integration into program activities.

Contribute to technical collaborations with national labs, universities, external vendors, and testing facilities; oversee off-site validation campaigns prior to installation in Xcimer facilities.

Establish departmental scientific best practices, documentation standards, design review processes, and quality expectations appropriate for industrial diagnostic systems.

Own the organization’s validated knowledge and collaborate with engineering and manufacturing to deliver diagnostic systems that are scalable, repeatable, and suitable for next‑generation fusion operations.

Identify key scientific and technical risks associated with diagnostic equipment and drive mitigation strategies that ensure reliable operation and support long-term scalability.

Support troubleshooting, root‑cause investigations, and analyses of anomalies across experimental operations and development environments.

Qualifications

Education: MS in Physics, Electrical Engineering, or a closely related field.

Experience: 10+ years of experimental experience in imaging, spectroscopy, laser experiments, plasma diagnostics, or development of complex optical/X‑ray/neutron diagnostic systems.

Deep experience with simulation tools for beam propagation, laser-matter interaction, radiation transport, nonlinear optics, and diagnostic performance modeling.

Experience designing, executing, and analyzing complex imaging, spectroscopic, or fusion experiments.

Demonstrated leadership of multidisciplinary scientific or R&D organizations.

Proven track record of mentoring, developing, and guiding high‑performing scientific teams.

Strong publication record and recognized scientific contributions.

Ability to thrive in a fast‑moving organization transitioning from startup to industrial scale.

Ability to balance hands‑on scientific leadership with high‑level strategic and organizational responsibilities.

Must be a U.S. citizen or national, U.S. permanent resident, or lawfully admitted as a refugee or granted asylum.

Desired

Ph.D. in Physics, Electrical Engineering, or a closely related field.

Experience in nonlinear optics.

Experience in X‑ray imaging and spectroscopy.

Experience in neutron diagnostics and detection systems.

Background in gas kinetics, plasma kinetics, and related simulations.

Experience building interferometric diagnostic systems.

Experience developing industrial optical/X‑ray/neutron diagnostic equipment.

Experience with research‑grade free‑space pulsed laser systems.

Experience with vacuum systems.

Familiarity with phase optics, precision optical manufacturing, and metrology.

Apply Now

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion!

This is a full-time, onsite role based at our headquarters in Denver, CO.

As a Laser Physicist, you will apply your expertise to design, build, modify, and operate both new and existing pulsed laser systems. You will enhance and optimize these systems, such as improving laser beam quality, and work with vendors to procure necessary hardware devices needed for specific laser upgrades. Additionally, you will assist optics engineers with aligning complex laser beam paths, calibrating laser diagnostics equipment, identifying opportunities to improve current diagnostics, writing requirements, and working with vendors to develop state-of-the-art high-energy laser diagnostics. Part of your responsibilities will include maintaining laser systems, which involves realignment, diagnosing issues, and coordinating with vendors to resolve component malfunctions and quickly bring the system back online. You will also conduct spectroscopic experiments, collect and process data, and collaborate closely with experimentalists, theorists, optics engineers, and controls engineers to ensure the system runs reliably and supports experimental needs.

We are looking for our scientists and engineers to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!

Responsibilities

Design, modify, operate, and maintain advanced pulsed laser systems.
Enhance laser beam quality by specifying, sourcing, and installing optical components and hardware.
Select optical components based on laser damage thresholds, transmission, and beam quality requirements; collaborate with vendors to refine specifications and procure these optics.
Develop clear procedures and documentation for technicians, providing training on complex laser systems to enable basic maintenance and alignment tasks.
Plan, execute, and oversee spectroscopic experiments, ensuring accurate data collection and thorough analysis.
Calibrate laser characterization devices and ensure experimental data is acquired accurately and free of artifacts.
Collaborate closely with engineers, offering clear technical guidance to support the design and development of laser systems.

Qualifications

BS with 3+ years of experience, MS with 1-2 years of related lab experience, PhD desired.
Advanced knowledge in solid state and gas pulsed lasers and characterization of laser pulses.
Ability to own and maintain complex laser systems.
Experience in specifying, budgeting, purchasing, installing, and operating laser systems, detectors, optics, spectrometers, and other scientific research equipment.
Experience in nonlinear frequency conversion processes.
Independent troubleshooting and solving non-trivial technical issues.
Planning, managing, and executing laser-based experiments.
Experience working with a multidisciplinary team of engineers and scientists.
Highly self-motivated, with the ability to work independently without guidance.
Advanced verbal and written communication skills.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum.

Desired

PhD in electrical engineering, chemistry, physics, or related fields.
Expertise in optical spectroscopy, gas kinetics, and data processing.
Experience in laser gain dynamics
Experience with electro-optical devices.
Experience in pulse shaping of laser pulses.
Experience in spectral shaping of laser pulses.
Hands-on experience with aligning Ti:Sapphire laser systems.
Familiarity with fiber optics.
Experience working with high-damage-threshold optics.
Knowledge of phase mask and/or free-form optic manufacturing, specification, and alignment.
Experience with ns and fs pulse diagnostics and characterization (spectral and temporal).
Experience with vacuum systems.
Experience leading teams of optical, laser, and controls engineers
Experience building laser beamlines
Experience working in multidisciplinary research laser facilities, such as national labs
Experience in writing scientific papers.
Experience in Matlab, Python, and LabVIEW.

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Responsibilities

Deploy, configure, and extend existing simulation tools such as WarpX and LPSE to model laser plasma interaction phenomena relevant to Xcimer’s laser architecture.

Develop workflows, simulation setups, post-processing pipelines, and benchmarking methodologies for efficient and repeatable simulation execution.

Lead the design and development of in-house LPI simulation software focused on collisional kinetics and paraxial laser propagation models.

Architect simulation software using modular, extensible, and maintainable scientific software frameworks with strong emphasis on composability and long-term scalability.

Implement and validate core physics models including collisional plasma kinetics, paraxial laser propagation, stimulated Raman scattering (SRS), stimulated Brillouin scattering (SBS), filamentation, and cross-beam energy transfer (CBET).

Perform verification, convergence studies, and benchmarking against existing tools, published results, and experimental data to ensure numerical robustness and model credibility.

Optimize simulation software for high-performance computing environments, including parallelization and scalability across modern compute architectures.

Maintain rigorous software engineering practices including version control, automated testing infrastructure, documentation, and reproducibility standards.

Collaborate cross-functionally with laser architecture, gas optics, radiation hydrodynamics, experimental physics, and other engineering teams to prioritize simulation efforts and integrate modeling outputs into broader system development activities.

Contribute to Xcimer’s long-term computational modeling strategy by identifying opportunities to integrate new physics capabilities and couple simulation domains through shared modular architectures.

Qualifications

Education: PhD in Computational Physics, Plasma Physics, Applied Physics, or a closely related technical field.

Strong software development skills in scientific computing using modern C++ and Python.

Experience developing physics simulation codes with emphasis on modular software architecture, maintainability, and software quality.

Strong understanding of laser plasma interaction physics, collisional plasma kinetics, and laser propagation models.

Familiarity with numerical methods for partial differential equations, kinetic plasma simulations, and/or paraxial wave equations.

Experience using, extending, or validating community simulation tools such as particle-in-cell (PIC) or fluid plasma codes.

Experience working independently and leading technically complex software development efforts.

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Desired

Experience with WarpX, LPSE, pF3D, or similar laser plasma interaction simulation tools.

Experience with high-performance computing, including MPI/OpenMP parallelization and/or GPU acceleration.

Familiarity with modern scientific software architectures including plugin systems, composable frameworks, or modular physics engines.

Experience within inertial confinement fusion (ICF), high-energy-density physics, or advanced plasma modeling environments.

Demonstrated experience building extensible scientific software platforms that support long-term collaboration and multi-user development.

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Responsibilities

Take ownership of a “virtual beamline” digital twin of our laser architecture

Work with other teams (Theory/Computation, Software Engineering, Optical Engineering, Mechanical Engineering, etc.) and key stakeholders to continue the development of a scalable virtual beamline architecture, as well as requirements, interfaces, functionality, and new modules

Run Monte Carlo simulations and parameter sensitivity studies using HPC resources

Write clear documentation to allow other users and developers to get up to speed quickly

Develop, implement, and enforce unit tests and other code validation checks

Think outside the box to identify and solve unique challenges involving big lasers!

Qualifications

Education: Bachelor’s degree in physics, optics, electrical engineering, computer science, or related field

Experience: 6+ years of experience in the fields of optical physics, lasers, or software engineering

Expertise in optical simulation methods, including one or more of the following: diffraction, ray tracing, Gaussian beamlet decomposition, laser amplification, turbulence correction, or nonlinear optical propagation

Demonstrated ability to write and maintain a high-quality, scalable code base with a team

Design of and hands-on experience using complex optical/laser systems

Excellent verbal and written communication, including documentation of technical results

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum

Desired

Master’s or PhD in physics, optics, electrical engineering, computer science, or related field

8+ years of experience in the fields of optical physics, lasers, or software engineering

Zemax, FRED, or similar software

Experience with inverse solution methods

CAD software experience

Knowledge of algorithm optimization for speed, especially for distributed computing

Apply Now

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion!
This is a full-time, onsite role based at our headquarters in Denver, CO.

As the Lead Experimental Physicist, you will be responsible for independently driving complex laser-based experiments from definition through execution and analysis. This role requires strong experimental physics judgment, deep interest in the underlying science, and the ability to quickly learn and master sophisticated systems. You will design experiments, develop/upgrade diagnostics, analyze and interpret data, and continuously identify opportunities to improve experimental performance. You will work closely with scientists, engineers, technicians, shot directors, and leadership, serving as the technical driver for assigned experimental programs. We are looking for our scientists and engineers to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!

Responsibilities

Act as the primary experimental owner for assigned laser experiments

Rapidly learn and develop deep understanding of complex experimental platforms, including lasers, diagnostics, and supporting subsystems

Design and execute experiments involving lasers, spectroscopy, imaging, and time resolved measurements

Develop and apply appropriate diagnostics to understand system performance and debug experimental issues

Translate high level scientific objectives into detailed experimental designs and test plans

Review experimental results critically, identify limitations, and drive systematic improvements

Perform quantitative post processing and analysis of spectroscopy and imaging data

Modify, extend, and maintain data processing and analysis scripts

Produce clear technical reports, presentations, and publishable quality results

Interface with the scientific board and senior scientists to understand experimental priorities and required outcomes

Collaborate closely with technicians and engineers, providing technical direction, mentoring, and training

Troubleshoot nontrivial experimental, diagnostic, and system level issues

Work effectively across disciplines, including experimentalists, theorists, engineers, and technicians

Qualifications

Education: PhD in Physics, Electrical Engineering, Applied Physics, or a closely related field, or equivalent experience

Strong hands-on experience with laser-based experiments

Solid understanding of optical and laser diagnostics

Demonstrated ability to independently drive complex experimental work

Experience debugging complex experimental systems and diagnosing root causes

Willingness to learn pulsed power concepts

Proficiency in data analysis and post processing

Strong written and verbal communication skills

High level of motivation, curiosity, and ownership mindset

Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum

Desired

Familiarity with excimer lasers

Experience in laser gain dynamics

Experience with laser wavefront measurement

Experience with deformable mirrors

Experience with phase plates

Experience with gas kinetics

Experience with vacuum systems.

Experience operating and aligning pulsed laser systems

Experience producing scientific publications

Experience working in multidisciplinary research laser facilities, such as national labs

Experience with Matlab, Python, and LabVIEW.

Prior experience mentoring technicians or junior team members

Apply Now

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion!

Join Xcimer’s engineering internship program and gain hands-on experience in designing and building cutting-edge laser-driven inertial fusion hardware and software. As an intern, you will be integral to developing the systems needed for the world’s first commercial fusion energy power plant. We have multiple internship opportunities available across various disciplines, including Mechanical Engineering, Electrical Engineering, Physics, and Software Development. Please apply to the posting that best matches your background and interests.

During this 12-week program at our headquarters in Denver, CO, you’ll work alongside an industry expert mentor to tackle complex, real-world challenges in fields such as structures, mechanisms, optics, pulsed power, computational engineering, plasma physics, and manufacturing. We are seeking interns who are passionate about applying their technical skills, problem-solving abilities, and commitment to quality to drive the future of clean energy!

Application close date: 12/31/2025

Responsibilities will vary depending on each intern's are of expertise and interests

Mechanical design and hardware development
Mechanical and thermal analysis using finite element analysis
Systems engineering
Manufacturing engineering
Electrical engineering (pulsed power)
Control systems engineering
Computational and software engineering (simulations)
Nuclear engineering
Optical engineering
Plasma physics

Qualifications

Qualified candidates must be enrolled in a Bachelor's, Master’s or PhD degree program from an accredited college or university in mechanical engineering, electrical engineer, physics, nuclear engineering, or other related engineering discipline.
Application of technical skills outside of the classroom (examples include: extracurricular projects, volunteering, personal projects, laboratory research, or prior internship/work experience).
Proficiency in CAD software for 3D modeling and simulation.
Strong written, verbal, communication, and interpersonal skills.
Passion for fusion energy!
Ability to work full-time onsite through the duration of the 12 week internship program in Denver, CO.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum.

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Join Xcimer’s engineering internship program and gain hands-on experience in designing and building cutting-edge laser-driven inertial fusion hardware and software. As a summer intern, you will be integral to developing the systems needed for the world’s first commercial fusion energy power plant. We have multiple internship opportunities available across various disciplines, including Mechanical Engineering, Electrical Engineering, Physics, and Software Development. Please apply to the posting that best matches your background and interests.

During this 12-week program at our headquarters in Denver, CO, you’ll work alongside an industry expert mentor to tackle complex, real-world challenges in fields such as structures, mechanisms, optics, pulsed power, computational engineering, plasma physics, and manufacturing. We are seeking interns who are passionate about applying their technical skills, problem-solving abilities, and commitment to quality to drive the future of clean energy!

Application close date: 12/31/2025

Responsibilities will vary depending on each intern's are of expertise and interests

Mechanical design and hardware development
Mechanical and thermal analysis using finite element analysis
Systems engineering
Manufacturing engineering
Electrical engineering (pulsed power)
Control systems engineering
Computational and software engineering (simulations)
Nuclear engineering
Optical engineering
Plasma physics

Qualifications

Qualified candidates must be enrolled in a Bachelor's, Master’s or PhD degree program from an accredited college or university in mechanical engineering, electrical engineer, physics, nuclear engineering, or other related engineering discipline.
Application of technical skills outside of the classroom (examples include: extracurricular projects, volunteering, personal projects, laboratory research, or prior internship/work experience).
Proficiency in CAD software for 3D modeling and simulation.
Strong written, verbal, communication, and interpersonal skills.
Passion for fusion energy!
Ability to work full-time onsite through the duration of the 12 week internship program in Denver, CO.
Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum.

Apply Now

Career FAQs

How do I apply?

Open positions are posted on our frequently refreshed Careers page. Send inquiries to careers@xcimer.energy.

Does Xcimer offer internships?

Yes. Xcimer runs one of the most competitive internship programs in the energy sector, giving the next generation hands-on experience in fusion science and engineering. And we have a track record of hiring many interns into full-time roles after graduation or completion of their academic studies. More information about our competitive internship program: xcimer.energy/internships

Does Xcimer hire non-technical professionals?

Yes. As we expand, we are increasingly hiring world-class employees in non-technical business roles, including HR, finance, government relations, and business development.

What is the culture like at Xcimer?

Xcimer’s culture is built around four core values:
Respectful Critique (we invite debate and require honesty, but never tolerate disrespect);
Humble Ambition (we aim to do great things while acknowledging we stand on the shoulders of giants);
Accountable Trust (we give each other real ownership and hold each other to commitments);
Rigorous Urgency (we move fast without compromising standards in an unforgiving discipline).

What benefits does Xcimer offer?

All full-time employees receive competitive pay, equity compensation, and comprehensive benefits including health, dental, and vision insurance; flexible spending accounts; short- and long-term disability; life and AD&D insurance; employer-matched 401K; up to 12 weeks paid parental leave; 13 paid company holidays; generous sick leave and vacation; relocation assistance; professional growth opportunities; free lunch Tuesdays and Thursdays; and a dog-friendly workplace.

Where are Xcimer’s offices and facilities?

Xcimer is headquartered in Denver, Colorado, with manufacturing operations in Tucson, Arizona.

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Xcimer Energy is Hiring Experts in Fusion, Aerospace, Lithography, and High-Performance Computing

We’ve hired the top talent in fusion, energy, defense, aerospace, semiconductor manufacturing, lithography, high-performance computing, and academia.

We plan to double the size of our team over the next year. Join us in our mission to commercialize fusion energy.

How we work

Respectful Critique

Accountable Trust

Humble Ambition

Rigorous Urgency

Benefits

Internships

Current Job Openings

Engineering (18)

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