Senior Avionics Hardware Engineer, RF

At Relativity Space, we’re building rockets to serve today’s needs and tomorrow’s breakthroughs. Our Terran R vehicle will deliver customer payloads to orbit, meeting the growing demand for launch capacity. But that’s just the start. Achieving commercial success with Terran R will unlock new opportunities to advance science, exploration, and innovation, pioneering progress that reaches beyondthe known.

Joining Relativity means becoming part of something where autonomy, ownership, and impact exist at every level. Here, you're not just executing tasks; you're solving problems that haven’t been solved before, helping develop a rocket, a factory, and a business from the ground up. Whether you’re in propulsion, manufacturing, software, avionics, or a corporate function, you’ll collaborate across teams, shape decisions, and see your work come to life in record time.

Relativity is a place where creativity and technical rigor go hand in hand, and your voice will help define the stories we’re writing together. Nowis a unique moment in time where it’s early enough to leave your mark on the product, the process, andthe culture, but far enough along that Terran R is tangible and picking up momentum. The most meaningful work of your career is waiting.

Join us.

The Avionics team is responsible for the full lifecycle of Terran R’s nervous system, designing, building, testing, installing, and operating the hardware that connects and controls every major electrical system on the vehicle and ground. The team leverages close partnership between avionics design, manufacturing, and test to enable rapid iteration and feedback loops. Engineers are deeply embedded into other functions within Relativity, working closely with propulsion, GNC, fluids, and stage engineering teams to ensure seamless integration and operation.

Now is a unique time to join: you’ll get to help shape Terran R's fundamental avionics architecture and be given a high degree of ownership on components that will fly.

In this role you will be responsible for owning the development, test and integration of GPS-based navigation system avionics used within the Terran R launch vehicle. You will work with cross-functional partner teams across the company, conducting architectural trades, developing acceptance and qualification test plans, while being responsible for critical sensory infrastructure allowing for the landing, recovery, and reuse of the vehicle booster stage.

Furthermore, you'll help to provide technical guidance across the vehicle's RF architecture - including telemetry downlinks, command uplinks, and antenna system deployment. You'll mentor hardware engineers on RF design fundamentals, review design analyses, and support architectural trades. This cross-system collaboration ensuring that our RF systems work cohesively from design through operations.

• Bachelor's degree in Electrical Engineering, Computer Engineering, or a related field
• 5+ years of experience in electronics designed for harsh environments and mission-critical applications such as launch vehicles, spacecraft, aircraft, or robotics
• Experience with hardware bring-up, validation, debugging, and data analysis
• Experience working with highly cross-functional teams (GNC, mechanical, electrical, software, etc.) to develop integrated electronics solutions
• Deep understanding of RF system fundamentals including:
  • Impedance matching and transmission line theory
  • Link budget analysis and RF propagation effects
  • Antenna theory (gain, beamwidth, polarization, radiation patterns)

• In-depth knowledge of GNSS receiver systems including PVT calculation, satellite tracking/acquisition, error sources, and RF front-end architecture
• Understanding of RF…