Castelion
Lead, Mission Software Engineer
Torrance, CA +1 · Full-time · Posted Oct 1, 2026
- Location
- Torrance, CA
19951 Mariner Ave, Torance, CA 90503 - Experience
- 7+ years of professional software engineering experience.
- Education
- Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, Aerospace Engineering, or a related technical field.
- Visa sponsorship
- Ability to obtain and maintain a U.S. security clearance is required. Employment is contingent on the ability to access applicable export-controlled information without additional export licensing; if classified-access or other government eligibility requirements apply, candidates will be notified.
About the job
Leads hands-on development and integration of mission software that connects Castelion’s weapons, launchers, command-and-control systems, sensors, and mission-planning tools, from architecture through testing and fielding.
What you'll do
- Own and lead architecture, implementation, integration, testing, and deployment of mission software capabilities.
- Develop software interfaces and command-and-control systems that connect Castelion products with aircraft, sensors, tactical networks, and external platforms.
- Write and review production code, lead debugging and integration efforts, and mentor engineers through lab, ground, and flight testing.
What they ask for
- Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, Aerospace Engineering, or a related technical field.
- 7+ years of professional software engineering experience.
- Strong software development experience in C++, Rust, Python, Go, C, or similar languages; experience delivering complex software systems and designing architectures across integrated or distributed systems.
- Experience with production codebases using Git, code review, automated testing, and CI/CD; ability to obtain and maintain a U.S. security clearance.
Nice to have
- Experience with mission planning, C2, fire control, targeting, autonomy, sensor integration, or weapon-system software.
- Experience with tactical or military interfaces and systems, embedded or real-time software, or SIL/HIL and flight-test environments.
Tools
C++, Rust, Python, Go, C, Git, CI/CD, MIL-STD-1553
Model-written summary · the original posting is authoritative