Propulsion Manufacturing Test Engineer II

Relativity Space • Long Beach, CA

1d

About The Position

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 mission of the Engine Manufacturing department is to deliver high-performing products and innovative manufacturing systems while driving continuous improvements in cost, quality, and lead time. Through cross-functional collaboration, high levels of accountability, and a focus on safety we play a crucial role in building our reusable rocket, Terran-R. We are responsible for providing design feedback on new hardware iterations, pioneering and implementing advanced manufacturing methods and systems, and ultimately delivering engine and vehicle hardware for testing prior to launch. Over the past year, the Engine Manufacturing Team has successfully developed, iterated, and delivered processes and hardware for the first Aeon-R development engines. Now, we are entering a critical phase: producing flight engines that will pave the way for Terran-R's inaugural launch to orbit.

Requirements

• Bachelor’s Degree or higher in Aerospace, Mechanical, or Electrical Engineering; or other related discipline.
• 2+ years of relevant technical experience, including: authoring & executing test procedures, designing & commissioning complex fluid-mechanical systems, or leading failure & anomaly investigations
• Strong understanding of and ability to apply engineering fundamentals in fluid, thermal, mechanical, and electrical engineering.
• Demonstrated knowledge of safety standards, common test hazards, and appropriate mitigations.
• Ability to find simple, innovative solutions for difficult problems and make critical decisions under pressure.

Nice To Haves

• Familiarity with Industry Test Standards: e.g., SMC-S-016, MIL-STD-1540D, & MIL-STD-810G.
• In-depth knowledge and experience with test automation, data acquisition, and control systems.
• Knowledge of engine components such as pumps, valves, regulators, check valves, as well as electric, pneumatic, and hydraulic valves, actuators, and other fluid system components.
• Desire to work hands-on, as part of a team, in both the development and production phases of a product lifecycle.

Responsibilities

• Design & Commission new test assets and systems - incorporating fluid, mechanical, and electrical components – to unlock new capabilities or enhance existing ones.
• Author & Optimize test sequences, procedures, and operational processes to support first-article development and transition into high-volume production.
• Review & Analyze test data to evaluate Terran-R & Aeon-R component performance.
• Define & Standardize operational requirements and processes to improve safety, data quality, and test repeatability.
• Plan & Execute projects that improve test capabilities and operational efficiency in a manner that aligns with the Integrated Master Schedule (IMS).

Benefits

• Relativity Space offers competitive salary and equity, a generous PTO and sick leave policy, parental leave, an annual learning and development stipend, and more!
• To see some of the benefits & perks we offer, please visit here.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level