Jobs and Careers

Principal Systems Engineer

United Statesfull_timeVerifiedPosted 27 Jul 2026

About the role

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 Systems Engineer, you will be a thought leader in Xcimer influencing and educating
technical leads to capture, organize, and track the integrated technical baseline for our IFE Programs,
and our Defense Programs. The successful candidate will perform leading and supporting roles in
establishing and maintaining bidirectional traceability across our requirements, architecture,
documentation, and analysis products. The candidate will define and maintain infrastructure, define
relationships between internal and external interfaces, and communicate system-level use cases and
relationships to a diverse group of stakeholders. The candidate will work with team leads across the
organization to craft the key framework and documents needed to define, design, build, test, and
activate our facilities and systems. We are looking for engineers to apply their technical expertise,
problem solving skills, and dedication to quality to positively impact the future of energy!

Responsibilities

Provide technical guidance and oversight to ensure the successful development and
implementation of system functionality
Implement engineering knowledge management strategies and tools to minimize process
overhead for engineering teams
Architect scalable verification and validation frameworks across data dashboards, engineering
tools, and Atlassian suite (Confluence & Jira)
Implement the processes, traceability, and documentation necessary to support defense
programs
Collaborate with program teams, including new development and legacy systems, to identify
opportunities for integration and support the development of updated releases
Carry out systems engineering activities in accordance with tailored system engineering
standards and practices
Drive and coordinate technical decision making
Conduct risk assessments to ensure risk mitigation plans are developed and implemented
Act as the negotiator between multiple teams to make sure the holistic system is optimized
Develop strategies, approaches for specialty engineering (operability, reliability, maintainability,
supportability) integration, analysis and verification

Qualifications

Minimum of a B.S. degree in engineering or other technical field (e.g. mechanical, electrical,
chemical, etc.)
15+ years of Systems Engineering/Software Engineering experience
Proven experience leading cross-functional teams and collaborating with stakeholders to drive
technical innovation and growth
Proven experience owning the integrated technical baseline for complex systems through the
full Systems Engineering Lifecycle
Experience working on development programs for large, complex, integrated systems or
facilities – preferably from the fusion/energy, aerospace, or space and defense industry
Strong technical experience in simulation, software, and data analysis, with an understanding of
industry trends and emerging technologies
Fluent with Atlassian suite tools (Confluence, Jira)
Experience with rapid technology development, integration, and testing
Great communication skills, ability to work effectively in teams, demonstrated execution and
coordination 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

Experience with defining, designing, and activating large facilities for assembly, integration, and
testing for large complex systems
Experience with high energy laser systems, optics or fusion energy systems
Project management skills including labor estimating and schedule management
Demonstrated configuration management experience

Equal Employment Opportunity

Xcimer Energy is proud to be an Equal Opportunity/Affirmative Action Employer and is committed to attracting, retaining, and developing a highly qualified, diverse, and dedicated work force. Xcime