Vehicle Fluids Hardware Development Engineer I

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 beyond the 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. Now is a unique moment in time where it’s early enough to leave your mark on the product, the process, and the 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 Stage Fluids team is responsible for the design and delivery of propellant, pressurant, pneumatics, and other fluid systems that turn structures into functioning rockets! The team has full ownership across design, production, test, and flight, maintaining a holistic view of Terran R, focused not on isolated parts but integrated functionality. Working on-site at the factory means you’re never far from the hardware, enabling rapid iteration and tight feedback loops across design and manufacturing. You won’t just be handed requirements: you’ll be expected to ask the right questions, collaborate with partners across the company, and ultimately find the best solutions for Terran R.

In this role, you will be responsible for the hardware design and implementation of that hardware into vehicle fluid systems, ensuring a reliable and efficient operation of our Terran R launch vehicle. Your primary tasks will be focused on:

Vehicle Fluids Hardware Development Engineers are responsible for taking the vehicle hardware from paper designs to highly reliable, high-performance hardware. This role requires deep engagement with both the design and production teams to ensure our designs are readily manufacturable, and our manufacturing processes are reliable and production ready. You will also be responsible for developing new manufacturing processes to improve the Terran-R vehicle. You should have strong engineering fundamentals as well as a knowledge of aerospace manufacturing techniques to be an effective Hardware Development Engineer. The role demands close interaction with propulsion hardware, including defining build procedures and hands-on build and integration of hardware.

<li style="font-family: arial, helvetica,