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Senior Simulation Software Engineer, GNC

Castelion — Tracked from its manatal job board

Torrance, California, United States Senior+ Posted Aug 2, 2026
PythonC++RustReact Native
Apply on Castelion's site Tailor your résumé to this job

About the role

About Castelion Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at…

What the index says about this role

  • First seen by JobLarper — Aug 2, 2026, 76 days ago. Older postings collect hundreds of applicants — a tailored résumé matters more the longer a role has been live.
  • No pay range in our index for this listing. Across 1,749 indexed Software Engineer roles in US that do publish one, the middle half sits between $185k and $288k, median $225k — JobLarper's read of the market, not a figure from Castelion.
  • What Software Engineer roles ask for — across 10,379 indexed openings: REST/APIs (41%), Python (38%), Backend (38%), Cloud (33%), Go (28%). This posting names Python, React Native.
  • Castelion is hiring actively — 57 open roles indexed.

Derived from the 28,470 roles JobLarper indexes daily from official company boards — not from the job description above.

⚡ JobLarper watched this role appear on Castelion's official board on Aug 2, 2026. Sign up free to get alerted minutes after roles like this go live, and tailor your real résumé to the exact description — nothing invented.

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