Avionics Test Engineer

Spacecraft represent the most pressing unmet need across the entire aerospace industry. As more launch vehicles come online and the cost to orbit decreases, more companies launching payloads to space continue to emerge.

For the first time in history, this influx of payload companies combined with reduced launch costs has resulted in a massive increase in need for commercial spacecraft platforms, known as satellite buses. These buses hold the payloads of our customers and are flown on launch vehicles.

Apex manufactures these satellite buses at scale using a combination of software, vertical integration, and hardware that is designed for manufacturing. Our spacecraft enable the future of society : ranging from earth observation to communications and more.

We’d love for you to join us on our mission of providing humankind access to the galaxy beyond our planet.

About the Role

We’re looking for an Avionics Test Engineer to join our growing Test team. In this role, you’ll be responsible for designing, executing, and automating tests for spacecraft electronics and embedded systems. You’ll work closely with electrical, software, and systems engineers to validate flight hardware and support integration campaigns.

Responsibilities :

• Develop and run test procedures for avionics subsystems and components
• Create and operate hardware-in-the-loop (HIL) and system-level test setups
• Automate tests using scripting languages (e.g., Python, LabVIEW)
• Interface with mechanical teams to support fixturing, harnessing, and integration tooling
• Author and maintain Design Verification Plans (DVPs) for avionics hardware
• Execute and document functional checkouts, environmental screening, and acceptance testing
• Support troubleshooting efforts and root cause investigations on flight hardware
• Collaborate with cross-functional teams on system integration and design-for-test initiatives

Required Qualifications :

Preferred Qualifications :

Why Join Apex?

Apex believes in creating a work environment that you look forward to embracing every day. Our employees love working at Apex, and we want you to love it too. We're a fast-growing startup backed by $200M in Series C funding, and we invest heavily in our people from day one.

What We Offer :

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

Best-in-class healthcare : 100% company-paid medical, dental, and vision for you and your dependents, plus $100k life insurance at no cost

Comprehensive PTO package to reset and recharge - starting at 15 days vacation, growing to 20+ days annually, plus 10 paid holidays

Competitive 401(k) plan with generous matching - 100% match on first 3%, 50% on next 2%

8 weeks paid parental leave plus childcare reimbursement up to $350 / day for work-related travel

Daily catered lunch and unlimited snacks to keep you fueled throughout the day

Vibrant community : Monthly office BBQs, pickleball tournaments, run club, and social gatherings for you and your family

Your dream desk setup and all the tools you need to be your most productive self

World-class Playa Vista office with EV chargers, with the benefit of in-person collaboration with amazing coworkers and flexibility to integrate work and life

Real impact opportunity : Work alongside experts from aerospace, new space, and other cutting-edge industries to make a lasting difference

Ready to join a team where your contributions matter and your future is bright? Let's build something extraordinary together.

Equal Opportunity Employer

Apex Technology, Inc. is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Candidates and employees are always evaluated based on merit, qualifications, and performance. We will never discriminate on the basis of race, color, gender, national origin, ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.