Senior Avionics Test Engineer, Optical

K2 is building the largest and highest-power satellites ever flown, unlocking performance levels previously out of reach across every orbit. Backed by $450M from leading investors including Altimeter Capital, Redpoint Ventures, T. Rowe Price, Lightspeed Venture Partners, Alpine Space Ventures, and others – with an additional $500M in signed contracts across commercial and US government customers – we’re mass-producing the highest-power satellite platforms ever built for missions from LEO to deep space.

The rise of heavy-lift launch vehicles is shifting the industry from an era of mass constraint to one of mass abundance, and we believe this new era demands a fundamentally different class of spacecraft. Engineered to survive the harshest radiation environments and to fully capitalize on today’s and tomorrow’s massive rockets, K2 satellites deliver unmatched capability at constellation scale and across multiple orbits.

With multiple launches planned through 2026 and 2027, we’re Building Bigger to develop the solar system and become a Kardashev Type II (K2) civilization. If you are a motivated individual who thrives in a fast-paced environment and you’re excited about contributing to the success of a groundbreaking Series C space startup, we’d love for you to apply.

K2’s plandoesn'tstop at satellite buses. Operating our own vehicles and manifesting regular rides to space uniquely positions K2 to design, test, and deploy‑at‑scale ambitious optical payloads in MEO, GEO, cis‑lunar, and deep space on unprecedented timelines. The satellite bus is the platform – the payloads are the mission.

As an Optical Avionics Test Engineer, you will bepivotal in developing production test hardware and software to deliveropticalavionicsthrough ATP and QTP. You will be working alongside the Opticalteamtointerface with ambitious optical payloads,validateprototypedesigns, define testrequirements, and design test infrastructure to meet critical programmatic milestonessuch as delivery offlight hardware to vehicle integration. In your first year, you will lead multidisciplinary test campaigns, root cause investigations, and production improvements to ensure reliability and scalability.

• Design and fabricate test hardware, harnessing, and test systems to supportoptical payloaddevelopment testing
• Develop modular, reusable test automation software and drivers in Python, Rust, C++ for Linux platforms
• Execute development and production tests to meet internal and external customer needs
• Develop data acquisition, control, and instrumentation systemsto testat the integrated level
• Own the project management of multiple test assets and acceptance testingofoptical avionicsincluding upgrades to support hardware lifecycle
• Design device simulators deployed across component subsystem and HITL testbeds
• Collaborate with a cross-functional team toestablishproduct requirements, testing methods, and project test schedules
• Design and build optical tables with automated active alignment for high-rate optical testing

• Bachelor’s degree in electrical,computer,aerospace,or other relevant engineering discipline or any equivalent combination of education and experience
• 5+ years of experience with test hardware design and software scripting
• Strongprogramming abilities (Python, C++,orRust)
• Experience designing, building, and testing electrical assemblies and test fixtures

• Experience with design and testing of optical systems
• Experience with camera automation and quantitative image processing (ex. beam profiling),power meters,and laser interlocks.
• Experience with data acquisition, controls, and dedicated test equipment
• Familiarity with SMC-S-016 or MIL-STD-810 testing methods, including vibration, shock, and thermal testing
• Understanding of the failure modes of electrical and opticalsystems in space environments
• Demonstrated ability to own electricalor opticalhardware test systems within an integrated engineering team
• Creative problem solver that can balance schedule, resource, and technical constraints

• Base salary range for this role is $150,000 - $200,000 + equity in the company
• Salary will be based…