Job Description
Senior Flight Software Engineer - Help Build the Next Generation of Spacecraft Systems! El Segundo, CA | On-site Opportunity Summary A fast-growing space technology startup is developing advanced spacecraft systems for high-energy orbital missions across LEO, MEO, GEO, and cislunar space. Founded by experienced engineers with backgrounds at leading aerospace organizations, the team is building next-generation propulsion and vehicle platforms that push the boundaries of orbital access and mission capability. This role offers the chance to take ownership of critical flight software systems supporting upcoming vehicle demonstrations and future missions. You will work closely with a highly technical founding team, move quickly, and play a hands-on role across the full software lifecycle. As the company scales, this position has strong potential to grow in scope and leadership responsibility. About Us We are an engineering-driven space startup focused on developing innovative spacecraft and propulsion technologies for demanding missions beyond traditional low Earth orbit. Our team blends deep aerospace experience with a startup mindset, emphasizing rapid development, high accountability, and mission-focused execution. We are building proprietary systems that enable new mission profiles and expand what is possible in space operations. Job Duties Lead the architecture and development of core flight software systems that meet performance, reliability, and mission requirements Implement and integrate software supporting guidance, navigation, and control, command and telemetry, mission sequencing, health monitoring, and fault management Develop real-time and safety-critical software using clean, efficient, and testable coding practices Support embedded software development for microcontrollers and flight hardware