Apex Space
Senior Flight Software Engineer (TS Cleared)
$185K–$250K
Los Angeles · On-site · Senior · Full-time · Posted Oct 14, 2026
- Experience
- 8+ years of total flight software experience.
- Education
- Bachelor’s degree in CS, EE, or equivalent.
- Visa sponsorship
- Applicants must qualify as a U.S. Person or be able to obtain required U.S. export authorizations. The requirements section also states U.S. citizenship is required.
About the job
Designs, develops, tests, and operates mission-critical flight software for satellite systems throughout their lifecycle, including spacecraft commissioning.
What you'll do
- Own software architecture, development, deployment, and operations for satellite systems.
- Plan and perform software testing; diagnose and resolve defects.
- Coordinate with engineering and operations teams, and support spacecraft commissioning during launch and early operations.
What they ask for
- U.S. citizenship and ability to access export-controlled data.
- Active Top Secret or Top Secret/SCI clearance; ability to obtain and maintain additional program access as needed.
- 8+ years of total flight software experience.
- Bachelor’s degree in CS, EE, or equivalent; strong proficiency in C++, Python, or Rust.
Nice to have
- Experience with mission-critical satellite software and real-time software on distributed hardware.
- Knowledge of embedded/real-time operating systems, hardware interfaces, satellite protocols, secure communications, or software CI/CD.
Pay
$185K - $210K (base salary); $200K - $250K (base salary)
Tools
C++, Python, Rust, Embedded Linux, Yocto, Buildroot, FreeRTOS, VxWorks
Model-written summary · the original posting is authoritative