Flight Software Engineer (All Levels)
Castelion Corporation · Torrance, CA
$110,000–$240,000
Jun 29, 2026
Torrance, CA
Jul 20, 2026
What this job asks for AI summary
A role focused on writing, testing, and integrating real-time embedded software for missile systems. Day-to-day work spans collaborating with guidance, navigation, and control engineers, supporting hardware-in-the-loop and flight testing, and following safety-critical software lifecycle practices. Suited to engineers at any career stage who have a background in C/C++, RTOS, and control-intensive or embedded systems, and who can obtain a Top-Secret clearance.
Mid level · National · Bachelor's required · Top Secret clearance · Full-time
“or” means any one of them counts — you don't need all of them.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
How this req sits in the market our data
Rare in this occupation — lead with these, and say what you built with them.
What the occupation pays Median $138,970 (middle half $107,524–$175,762).
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.
Why we read it this way (9)
The posting is explicitly open to 'all experience levels, from early-career engineers to senior technical contributors,' with no stated minimum years of experience. Seniority is set to Mid as the middle of the stated range, reflecting the broad pool intended.
The title carries no level modifier ('Flight Software Engineer') and the posting explicitly spans all levels, so advertised seniority is Unspecified.
Clearance is stated as 'Active or eligible for a Top-Secret security clearance' — this is a hard gate in the Basic Qualifications section. Note: the posting does not specify TS/SCI, so TopSecret (not TopSecretSci) is used.
No work location is specified in the posting. Castelion is based in the Los Angeles, CA area (Torrance, CA), but since no location is stated, the CBSA fields are left blank.
Degree requirement: the posting lists 'Bachelors or Master's degree' as a Basic Qualification without offering an equivalent-experience substitution, so Bachelors is set as the minimum hard requirement.
C and C++ are listed together as a single proficiency requirement ('Proficiency in C/C++'); they are emitted as separate skills since both are distinct technologies used in the stack, but each lists the other as an alternative to reflect the joint phrasing.
GNC systems experience is listed in Basic Qualifications with the qualifier 'or similar control-intensive applications' — the requirement is for this category of experience; no specific named alternative tool exists to populate alternatives.
FPGA and Agile appear under 'Preferred Skills and Experience' and are marked accordingly.
Requires a Top Secret clearance — the cleared population is a small fraction of this occupation, so the real candidate pool is materially smaller than the estimate below, which does not model clearance.
Read the full posting
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