How do I apply?
Open positions are posted on our frequently refreshed Careers page. Send inquiries to careers@xcimer.energy.
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.
We invite criticism, welcome debate, and require honesty, but never tolerate disrespect or rudeness.
We trust each other with great responsibility and ownership of our responsibilities but hold each other accountable to deliver on commitments.
We aim to do great things while remembering we stand on the shoulders of giants.
We must act quickly and decisively while maintaining the highest standards in an unforgiving field.
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.

We have one of the most competitive internship programs in the energy sector. 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!
38 open positions across 5 departments
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 an Adaptive Optics Engineer/Scientist, you will apply your skills to design, model, and implement high-performance adaptive optics systems for next-generation laser technology. You will play a critical role in developing advanced wave-optics simulation tools, creating and optimizing control algorithms, and supporting the integration and operation of adaptive optics hardware on high-energy laser platforms. Your work will directly contribute to improving beam quality, stability, and system performance, enabling the delivery of unprecedented laser capabilities for IFE. 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!
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 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.
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 Control Systems Engineer – Manufacturing & Automation, you will apply your expertise in industrial automation and PLC-based control systems to design, stand up, and support advanced manufacturing and assembly lines. You will work hands-on with PLCs, robotics, safety systems, fieldbus networks, and industrial IO to enable reliable, scalable, and repeatable production systems. We are looking for engineers who enjoy building systems from concept through commissioning and thrive in fast-paced manufacturing environments.
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 Control Systems Engineer – Test & Measurement, you will apply your skills to the design, implementation, verification, and commissioning of complex test and measurement systems used to validate advanced hardware and subsystems. We are looking for an engineer who brings strong diagnostic thinking, hands-on test stand experience, and demonstrable software capability to ensure systems are correct, reliable, and fit for purpose.
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 Director of Simulation & Synthesis, you will lead the development of Xcimer’s enterprise-wide modeling, simulation, and systems synthesis capability. You will be responsible for building the organization, tools, processes, and governance that enable high-confidence engineering decisions across complex, multi-physics fusion systems. This role will partner closely with Program leadership and peer engineering departments in a matrix organization to ensure simulation efforts are scalable, credible, and aligned to program execution needs. We are looking for a technical leader to apply their expertise in simulation, systems thinking, and organizational leadership to positively impact the future of energy!
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 Director of Laser Engineering, you will lead the development, scaling, and industrialization of advanced laser systems that support Xcimer’s next-generation fusion energy platform. You will define the technical direction for large-scale laser architectures, build and mentor a high-performing engineering organization, and ensure laser systems are reliable, manufacturable, and scalable for industrial deployment. We are looking for a technical leader to apply their expertise in laser engineering, systems integration, and organizational leadership to positively impact the future of energy!
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 Director of Nuclear Engineering, you will lead and grow Xcimer’s Nuclear Engineering discipline, ensuring the company applies rigorous nuclear engineering practices across all programs, facilities, and lifecycle phases. You will serve as a technical authority within Xcimer’s matrix engineering organization, partnering closely with Program leadership and peer Department Heads to establish standards, mentor engineers, and ensure high-quality technical execution. We are looking for a technical leader to apply their expertise in nuclear engineering, systems thinking, and organizational leadership to positively impact the future of energy!
Organizational Leadership
Technical Leadership
Cross-Functional Collaboration
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 an Electrical Engineer — Signal Distribution & Controls Packaging, you will apply your skills to own and deliver end‑to‑end electrical system implementation, including low voltage power distribution and protection, control panels and cabinets, harnessing, and electrical process and interface diagrams (P&IDs). We are looking for engineers who bring strong technical depth, systems thinking, and a commitment to quality to help build the electrical foundation of next‑generation fusion systems.
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 an Optical Control Systems Engineer, you will play a critical role in the design, implementation, and validation of precision optical control systems for high‑energy laser facilities. You will develop and validate advanced adaptive optics (AO) control algorithms, integrate real‑time optical sensing and actuation hardware, and support time‑of‑flight (TOF)–based tracking and synchronization systems for target insertion and laser‑target engagement. This role spans algorithm development, hardware integration, and system‑level validation in an operational laser environment. We are seeking an engineer who combines deep optics and controls expertise with hands‑on system integration experience, and who thrives in solving multi‑disciplinary problems at the limits of precision, timing, and speed.
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 Principal Manufacturing Development Engineer, you will be responsible for developing automated equipment and manufacturing processes that enable reliable, repeatable production at increasing volumes. You will take ownership of automated manufacturing projects from concept through deployment, working closely with mechanical, electrical, controls, manufacturing, quality, facilities, and systems engineering partners. This role requires a hands-on engineer who is comfortable moving between design, prototyping, implementation, and troubleshooting in a fast-moving development environment.
This position offers the opportunity to significantly influence manufacturing capability, throughput, and system reliability across multiple hardware platforms critical to fusion energy development.
Develop Advanced Automated Manufacturing Equipment: Lead the design and implementation of automated manufacturing systems incorporating industrial robotics, motion systems, sensing, and vision technologies. Define system architectures that prioritize reliability, scalability, and maintainability.
Controls and System Integration: Support controls engineers, who will develop and integrate electrical and controls systems using industrial PLCs, standard communication protocols, and HMI platforms. Support data acquisition and performance monitoring to evaluate and improve system behavior. Work with controls engineers to integrate industrial robotic systems to improve consistency, precision, and production efficiency within automated manufacturing cells.
Mechanical Design and DFM Support: Design mechanical components and assemblies using 3D CAD and GD&T principles. Generate detailed fabrication drawings and provide design-for-manufacturing feedback to improve automation performance and robustness.
Risk and Failure Analysis: Conduct product and process failure analyses, including DFMEA and PFMEA, to identify risks, implement mitigations, and support high system uptime.
Project and Program Ownership: Plan and execute multiple projects simultaneously by setting milestones, tracking progress, managing risks, and coordinating cross-functional resources. Support the development of internal processes that enable predictable delivery.
Manufacturing Process Optimization: Evaluate and improve automated manufacturing workflows by analyzing cycle times, material flow, automation ROI, and work-in-process buffering to support consistent production output.
Technical Documentation and Handover: Create comprehensive documentation including electrical and pneumatic schematics, bills of materials, maintenance documentation, spare parts lists, and troubleshooting guides to support long-term operation.
Safety and Regulatory Compliance: Collaborate with EHS stakeholders to perform risk assessments, define personal safety requirements, and integrate appropriate guarding.
Supplier and Integrator Management: Work with procurement and external vendors to develop RFQs, define technical specifications, manage build and installation phases, and lead factory and site acceptance testing for robots, cobots, palletizers, and other actuated parts of the production line. Support and coordinate with controls engineers who will own controls hardware definition and procurement.
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 Tucson, AZ facility.
As a Process Engineer in the Materials & Process Engineering Department, you will work closely with our capacitor manufacturing team to develop, optimize, and scale manufacturing processes critical to Xcimer’s fusion systems. This role is hands-on and execution-driven, spanning process definition, testing, data analysis, and integration of new processes into an active manufacturing line.
Develop, optimize, and scale manufacturing processes for capacitor production, with a focus on coatings, materials integration, and process robustness.
Define end-to-end process flows, including process steps, key parameters, control limits, and acceptance criteria.
Design, write, and execute detailed test plans to evaluate new materials, coatings, and process changes.
Plan and conduct Design of Experiments (DOE) to systematically improve yield, performance, and manufacturability.
Work directly with the capacitor manufacturing team to run experiments, collect data, and implement process improvements on the production line.
Analyze test results, identify root causes, and translate findings into actionable process changes.
Generate clear, thorough documentation, including process specifications, work instructions, test reports, and manufacturing change documentation.
Support the insertion of new or modified processes into the manufacturing line, including qualification, validation, and handoff to production.
Use standard materials and process characterization tools to evaluate materials, coatings, and finished components.
Collaborate closely with materials scientists, manufacturing engineers, and technicians to ensure successful scale-up and production readiness.
Education: MS in Chemical Engineering, Chemistry, Materials Science, or a related engineering or science discipline (or equivalent experience).
Experience: 5+ years of industrial experience developing, optimizing, and scaling manufacturing processes in a production or pilot-scale environment.
Strong understanding of process development, process control, and scale-up principles.
Hands-on experience designing and executing test plans and DOE.
Experience working cross-functionally with engineering and manufacturing teams.
Ability to independently troubleshoot complex process and materials issues.
Strong written and verbal communication skills, with the ability to clearly document technical work.
Hands-on experience with fabrication processes such as thin film deposition, capacitor manufacturing, etching processes
Hands-on experience with materials and process characterization techniques, including:
Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDX)
Optical microscopy
Metallographic sample preparation
X-ray Diffraction (XRD)
Electrical resistivity measurements
Experience with coatings processes and/or surface treatments is highly desirable.
Familiarity with statistical analysis tools and experimental data interpretation.
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.
Prior experience in capacitor manufacturing or electronic component manufacturing.
Experience transitioning processes from R&D to pilot or production scale.
Familiarity with manufacturing quality systems and process qualification.
Experience writing formal process specifications and manufacturing documentation.
Comfort working in a fast-paced, multidisciplinary, hardware-focused environment.
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 Pulsed Power Physicist, you will work on the science and engineering of electron-beam cathode systems for Xcimer's pulsed power driven inertial fusion energy program. The core goal is maximizing beam efficiency and energy deposition on target. You will lead cathode development across multiple emitter technologies , design and optimize hibachi foil/anode structures for beam transport, and build complex experimental systems from concept through commissioning. This role carries significant independent scientific responsibility. We want someone who is strong in both theory and experiment and rigorous about documentation.
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.
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 Sr. Principal Embedded Engineer, you will act as a technical authority and engineering leader, responsible for architecting and delivering complex embedded systems across a diverse range of applications. This role combines deep technical execution with strategic leadership, including shaping technical direction, mentoring engineers, and driving system-level decisions across the full product lifecycle from concept development through production and sustainment.
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 a Senior Structural Analyst, you will perform structural and mechanical analyses using classic hand calculations and finite element model (FEM) simulations to support design, manufacturing, assembly, and test. A thorough understanding of structural behavior, static and dynamic loading, and margins is required to achieve system performance and cost-optimized designs. You will create concise, accurate analysis documentation; perform peer reviews of analysis and reports; and provide analysis guidance to design engineers and junior analysts. As hardware matures from prototype builds through integrated test campaigns, you will also help resolve nonconformances, support root-cause investigations, and enable rapid iteration through close collaboration with engineering and operations.
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 Teamcenter Administrator, you will apply your skills to install, configure, and maintain Teamcenter to support Xcimer’s Engineering and Product Development Process. We are looking for Teamcenter professionals who will develop and maintain the Teamcenter environment that enables Xcimer to deliver fusion power to the grid and transform the future of global energy.
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 Shot Director (Senior Test Engineer), you serve as the senior operational authority for the safe, disciplined, and effective execution of laser shot operations. During assigned shifts, you lead shot execution, coordinating system leads, operators, diagnostics, and safety functions to ensure operational readiness, compliance with operating limits, and successful test outcomes. You collaborate with peer Shot Directors to review and refine experiment requests and execution plans, streamlining scope and workflows to reduce inefficiencies and improve test throughput. Following shot execution, you analyze, review, and present shot data in close collaboration with Science Team customers.
When the facility transitions to maintenance mode, operational authority is formally handed over to the Beamline Lead and Pulsed Power Lead. During these times, you will support the leads as needed with troubleshooting or other work. In addition to leading live shot operations, the Shot Director owns and leads continuous improvement of the shot operations infrastructure, including procedures, operating limits, alerts, operator notes, and checklists that enable safe and repeatable operations.
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 Systems Engineer, you will apply your skills to define requirements, execute architectural design analyses, manage complex system interfaces, and lead verification and validation on fusion energy systems. Your activities will span risk management, configuration and data management, integrated test planning, technical performance measurement management, and lifecycle baseline management. 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!
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!
As a Capacitor Assembly Technician, you will apply your skills to build, modify and assemble components in a quality manner to achieve the desired finished product. We are looking for our technicians to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!
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 Cost Accountant, you will apply your skills to oversee all aspects of accounting operations including general ledger, accounts payable, audit, and compliance functions while establishing robust financial controls, policies, and reporting systems that protect company assets and ensure regulatory compliance. The role demands excellence in supporting team members, developing cost accounting, and supporting a move in accounting infrastructure to new enterprise systems including ERP and government compliance tools. We are looking for an experienced accountant to apply their expertise, problem solving skills, and dedication to quality to positively impact the future of energy!
Financial Accounting & Close
Tax Credits and Incentives
Cost Accounting & Manufacturing Finance
R&D Accounting
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.
This is a full-time, onsite role based at our headquarters in Denver, CO.
As Cybersecurity & Compliance Administrator, you will operate and continuously improve Xcimer’s security, compliance, and data privacy posture while the company continues to scale, and support U.S. defense‑related work. This is a hands‑on individual contributor role responsible for day‑to‑day security operations, CMMC 2.0 Level 2 compliance execution, and establishment of a defensible data privacy program appropriate for a high‑value and high‑visibility target. We are looking for our members to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!
Microsoft Purview Administration (Compliance & Data Governance)
Microsoft Defender Administration (Threat Protection & Security Operations)
Incident Response & Threat Prevention
Compliance Enablement (CMMC L2 / NIST Controls)
On‑Prem & Air‑Gapped Security
Security Engineering & Integrations
Cross-Functional Collaboration & Communication
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!
As the Director of Government Affairs for Xcimer Energy, you will apply your skills to build and maintain senior level relationships in key government and state agencies to become a key voice in fusion energy policy. We are looking for leaders in our company to apply their expertise, problem solving skills, and dedication to quality to positively impact the future of energy!
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 Director of Supply Chain, you will apply your leadership, technical, and operational expertise to build, scale, and execute Xcimer’s end‑to‑end supply chain strategy. This role is accountable for ensuring material availability, cost, quality, and schedule performance across R&D, pilot programs, and future commercial-scale manufacturing. You will partner closely with Engineering, Manufacturing, Program Management, and Finance to enable rapid development while establishing the foundation for repeatable, industrialized execution.
We are looking for a supply chain leader to apply strategic thinking, rigorous execution, and systems-level judgment to positively impact the future of energy.
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 Facilities Maintenance Technician you will play a critical role in the daily operations and maintenance of our laser development facility and headquarters in Denver, CO. With nearly 80,000 square feet of building and associated utilities, you will not only be responsible for the planning, installation and performance of preventive and corrective maintenance, and unplanned servicing of facility systems and manufacturing equipment, but also assist in responding to trouble calls where your skills may also apply. We are looking for our technicians, engineers and scientists to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!
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 Paralegal, you will apply your skills to assist Xcimer employees and the legal department across many legal domains. We are looking for all our employees to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!
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 Receptionist, you will apply your skills to being the first point of contact at our Denver HQ. We are looking for our operational support members to apply their expertise, problem solving skills, and dedication to quality to positively impact the future of energy!
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 an Warehouse Operations Specialist you will be responsible for overseeing daily warehouse, shipping, receiving, and inventory control operations while ensuring accuracy, efficiency, safety, and compliance with company procedures. This role provides leadership and guidance to warehouse personnel, coordinates material movement throughout the facility, maintains inventory integrity, and supports production operations by ensuring the timely receipt, storage, and shipment of materials and finished goods. We are looking for leaders who apply their organizational skills, attention to detail, problem-solving abilities, and commitment to operational excellence to positively impact the future of energy!
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 Program Element Lead of Fusion Systems, you will apply your skills to define, plan, and deliver a hundred million to billion-dollar class engineering program from concept through completion, overseeing cross-functional teams to ensure technical excellence, budget adherence, and timely execution. 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!
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 Program Element Lead for Laser Systems you will lead end-to-end engineering execution for a high-energy laser program centered on the excimer laser technology under development at Xcimer. You will drive delivery from early R&D through prototype demonstration and transition to production/fielding—owning technical performance, schedule, cost, and risk. This is a build-and-deliver role: you’ll run integrated product teams across engineering, science, manufacturing, supply chain, and quality to turn designs into tested hardware and verified capability. You will ensure the program delivers against commitments and is ready for integration and test in support of company objectives.
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 Program Element Lead for Site and Structures you will lead end-to-end development and delivery of facilities and site infrastructure, including planning, design, procurement strategy, construction oversight, commissioning, and transition to operations for the Vulcan laser system and Xcimer's fusion energy pilot plant, Athena. We are looking for our project coordinators to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!
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 Project Delivery Manager, you will lead execution for a major Element within a multi-billion-dollar development program. Working in close partnership with the Element Director, you will sit at the center of day-to-day delivery, resolving friction as it arises, ensuring commitments are met, and providing leadership with a clear view of schedule and cost performance. We are looking for our project coordinators to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!
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!
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 Plasma Interaction (LPI) Computational Physicist, you will develop and extend Xcimer’s laser plasma interaction (LPI) modeling capabilities through both community simulation tools and next-generation in-house code development. You will support the development of computational frameworks that model collisional plasma kinetics, paraxial laser propagation, and coupled LPI phenomena critical to Xcimer’s fusion systems. We are looking for physicists to apply their expertise in plasma physics, scientific computing, and high-performance simulation to positively impact the future of energy!
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!
Are you interested in joining Xcimer Energy, but dont see the perfect fit? No problem.
We are always looking for great engineers, scientists, technicians and overall amazing people to help us deliver clean, abundant and safe energy to the grid with laser driven inertial fusion. If you love tackling challenging problems from start to finish, then we want to hear from you!
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!
We are looking for talented engineers, scientists, and technicians to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!
Open positions are posted on our frequently refreshed Careers page. Send inquiries to careers@xcimer.energy.
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
Yes. As we expand, we are increasingly hiring world-class employees in non-technical business roles, including HR, finance, government relations, and business development.
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).
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.
Xcimer is headquartered in Denver, Colorado, with manufacturing operations in Tucson, Arizona.