Joblaze summary

In the role of Flight Software Engineer at Apex Space, the individual will design and develop software that ensures the autonomous operation of satellite buses, focusing on mission-critical systems that function reliably around the clock. Proficiency in programming languages like Python, C++, and Rust, along with experience in real-time systems and embedded Linux, are essential for success. This position is ideal for engineers with over two years of flight software experience who thrive in a fast-paced, collaborative environment. Apex, a rapidly growing startup, emphasizes innovation and teamwork in the aerospace sector.

Joblaze insights

Listed about a month ago — first seen on Joblaze September 3, 2026. Last confirmed on Apex Space's careers page October 29, 2026.
Python appears in 15.9% of 4891 comparable mid other roles; Protobuf appears in 0.1% of 4891 comparable mid other roles.

Quick facts

Is the Flight Software Engineer role remote?: No — this is an on-site role in Los Angeles.
How much experience is required?: At least 2 years of relevant experience for this Flight Software Engineer role.
Where is the role based?: Apex Space is hiring for this position in Los Angeles.
What's the tech stack?: Joblaze extracted these technologies from the posting: C++, CCSDS, ECSS, Embedded Linux, Protobuf, Python.
Does Apex Space sponsor work visas for this role?: Yes — the posting indicates visa sponsorship is available for the right candidate.
What seniority level is this role?: Apex Space targets mid-level candidates for this position.
Is this full-time or contract?: Full-time for this Flight Software Engineer role at Apex Space.

From the original posting

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.
2.5+ 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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What We Offer For Full-time Employees:

Shared upside: Receive equity in Apex, letting you benefit from the work you create

Standard company text repeated across Apex Space's postings is omitted here.

Flight Software Engineer

About the Role

What We Offer For Full-time Employees:

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