Apex

Flight Software Engineer (Senior)

Apex$120K — $150K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 6+ years experience in flight software
  • Bachelor's degree in Computer Science, Electrical Engineering, or equivalent
  • Proficiency in Python, C++, and Rust
  • Experience with real-time systems on distributed hardware
  • Knowledge of embedded Linux OS and system administration
  • Familiarity with satellite systems and protocols like CCSDS and ECSS
  • Experience with software integration and validation for real-time systems

Responsibilities

  • Design, implement, and manage software applications for satellite systems
  • Support spacecraft commissioning during launch and early operations
  • Own spacecraft software solutions through all lifecycle stages
  • Conduct unit, integration, and system-level testing of software
  • Collaborate with teams to establish product requirements and technical roadmaps

Benefits

  • Equity options for shared upside
  • 100% company-covered medical, dental, and vision for employees and dependents
  • 15+ days of PTO plus 10 paid holidays to promote work-life balance
  • Competitive 401(k) with generous matching contributions
  • 8 weeks paid parental leave and childcare reimbursement for travel
  • Daily catered lunches and unlimited snacks
  • Monthly social events and activities to foster community
  • Workplace setup tailored for productivity
  • State-of-the-art office in Playa Vista with EV chargers
  • Opportunity to work on impactful projects with industry experts
Full Job Description
About the Role

As a member of the Flight Software team, you will design, develop, and own the software driving the autonomous operation of Apex's satellite buses. You will be responsible for developing mission critical systems that operate reliably 24/7, ensuring that Apex's spacecraft continue to operate in all scenarios.

In this role, you will work closely with both internal teams and external customers, aligning your solutions with company objectives and user requirements. We are looking for motivated engineers who are eager to solve complex problems with a focus on practicality and scalability, and who thrive in a dynamic, fast-paced environment.

Responsibilities:
  • Design, implement and own mission critical software applications for satellite systems.
  • Support commissioning of spacecraft during launch and early operations and ensure software systems remain functional during critical operations.
  • Own spacecraft software solutions through the full lifecycle from initial design to deployment.
  • Perform unit testing, integration testing, and system-level testing of software components, identifying and resolving any defects or issues.
  • Collaborate with cross-functional teams to baseline product requirements and technical roadmaps.


Requirements:
  • U.S. Person status is required as this position needs to access export controlled data.
  • 8+ years of total flight software experience
  • Bachelor's degree in CS, EE or equivalent.
  • Strong proficiency in programming languages such as Python, C++, Rust.
  • Experience with real time systems running on distributed hardware.
  • Knowledge of embedded Linux operating systems, system administration and creating Linux distributions (Yocto).
  • Familiarity with satellite systems and protocols, such as CCSDS, and ECSS.
  • Experience with software integration, testing, and validation for real-time and distributed systems.
  • Familiarity with network protocols (TCP/IP, UDP), secure communication systems, Protobuf and encryption.

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About Apex

Industry
Founded
2003

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