Flight Software Engineer (Early)

The role

You will design, develop, and own software driving the autonomous operation of satellite buses. You will develop mission critical systems that operate reliably 24/7.

What you will do

• Design, implement and own mission critical software applications for satellite systems.
• Support commissioning of spacecraft during launch and early operations.
• 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.
• Identify and resolve defects or issues.
• Collaborate with cross-functional teams to baseline product requirements and technical roadmaps.

Required qualifications

• U.S. Person status is required to access export controlled data.
• 1+ 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.

Benefits

• Equity in Apex
• 100% company-paid medical, dental, and vision for you and your dependents
• $100k life insurance at no cost
• Starting at 15 days vacation, growing to 20+ days annually
• 10 paid holidays
• 100% match on first 3% and 50% on next 2% of 401(k)
• 8 weeks paid parental leave
• Childcare reimbursement up to $350/day for work-related travel
• Daily catered lunch and unlimited snacks
• Monthly office socials, pickleball tournaments, run club, and gatherings
• Dream desk setup

Before you apply

• U.S. Person status is required to access export controlled data.
• Applicants must qualify as a U.S. Person (U.S. citizen or national, lawful permanent resident, refugee, or individual granted asylum) or be able to obtain required export authorizations.

About the company

Apex manufactures satellite buses at scale using software, vertical integration, and hardware. The company is a fast-growing startup that has raised more than $500M in funding.