Apex Space
Senior Software Engineer, Embedded (TS Cleared)
$185K–$250K
Los Angeles · Senior · Full-time · Posted Oct 14, 2026
- Experience
- 8+ years writing C/C++ for embedded systems; preferred: 3+ years of 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 separately lists U.S. citizenship.
About the job
Designs, develops, tests, and supports embedded flight software for satellite systems, from avionics drivers and onboard algorithms through deployment and spacecraft operations.
What you'll do
- Develop low-level software, device drivers, and onboard control and fault-response algorithms for spacecraft avionics.
- Own mission-critical software throughout its lifecycle; plan and execute unit, integration, and system-level testing.
- Collaborate with hardware, systems, test, and operations teams, including supporting spacecraft commissioning.
What they ask for
- U.S. citizenship is listed as a requirement; the posting also describes export-control eligibility alternatives.
- Active Top Secret or Top Secret/SCI clearance, with ability to obtain and maintain additional program access as needed.
- 8+ years writing C/C++ for embedded systems.
- Bachelor’s degree in CS, EE, or equivalent; strong proficiency in C++, Python, or Rust.
Nice to have
- 3+ years of flight software experience.
- Experience with microcontroller firmware, hardware/software integration, or embedded and real-time systems.
Pay
$185K - $210K (Senior; base salary); $200K - $250K (Staff; base salary)
Tools
C/C++, C++, Python, Rust, Embedded Linux, Yocto, Buildroot, FreeRTOS
Model-written summary · the original posting is authoritative