Principal Systems Engineer
Xcimer Energy · Denver
$201,450–$237,000
Jul 26, 2026
Denver
Jul 28, 2026
What this job asks for AI summary
A Principal Systems Engineer role at a fusion energy startup in Denver, responsible for establishing and maintaining the integrated technical baseline across requirements, architecture, documentation, and verification/validation frameworks for both commercial IFE and defense programs. The position involves cross-functional technical leadership, risk management, and systems engineering lifecycle ownership for large, complex integrated systems. Best suited to a seasoned systems engineer with a background in aerospace, defense, or energy.
Senior level · 15+ years · Denver-Aurora-Lakewood, CO · Bachelor's required · Full-time
Advertised as Principal, but the requirements read as Senior.
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Why we read it this way (6)
SOC classification is uncertain: 'Systems Engineer' in this context is a discipline (requirements traceability, V&V frameworks, technical baseline management) that does not map cleanly to any single SOC code. 15-1299 (Computer Occupations, All Other) is used as the best available fit; 15-1211 (Computer Systems Analysts) is a plausible alternative given the systems analysis and integration focus.
The title says 'Principal' but the requirements — while demanding (15+ years, cross-functional leadership, full lifecycle ownership) — describe a senior individual contributor role without explicit org-wide technical authority or a scope that clearly exceeds a Senior band. Seniority is assessed as Senior accordingly.
'Simulation' and 'data analysis' are listed under required qualifications as part of 'strong technical experience in simulation, software, and data analysis' — they are retained as required skills, though they are broad capabilities rather than named tools.
Configuration management and project management appear only under the 'Desired' (preferred) section.
The posting requires U.S. citizenship, permanent residency, or lawful asylum/refugee status — no formal security clearance is stated as a hard gate, though defense program work is mentioned.
Ignored 3 non-technology phrase(s) as skills (responsibilities/concepts, not named tools): data analysis, configuration management, project management.
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