Engine Systems & Test Team- Propulsion Test Responsible Engineer I

Job Description 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. Achieving commercial success with Terran R will unlock new opportunities to advance science, exploration, and innovation, pioneering progress beyond the known. Joining Relativity means being part of a team where autonomy, ownership, and impact are valued at every level. Here, you're not just executing tasks; you're solving new problems, helping develop a rocket, a factory, and a business from the ground up. Whether in propulsion, manufacturing, software, avionics, or corporate functions, you'll collaborate across teams, influence decisions, and see your work come to life quickly. Relativity fosters a culture where creativity and technical rigor go hand in hand, and your voice helps shape our story. This is a unique moment to leave your mark on the product, process, and culture, with Terran R gaining momentum. The most meaningful work of your career awaits. Join us. About the Team: The Propulsion team focuses on developing high-performance, manufacturable engines for Terran R. Engineers oversee the entire lifecycle of their parts, from design to production, qualification, and flight. The team values bottoms-up decision-making, ownership, and accountability. Designing engines with 250,000 pounds of thrust is just the start; as the program progresses, the team explores modifications for future engines, including thrust upgrades, new cycles, and mass production design. About the Role: This position is on the Engine Systems & Test Team, working across simulation & software, system architecture, requirements, interfaces, and hotfire testing. The team collaborates with component engineers, manufacturing, test, and launch teams to deliver engines capable of propelling Terran to orbit. We aim for continuous improvement and support both hardware and team development. We are hiring for the integrated engine test team, which tests full engine assemblies. Your work may involve various areas depending on your skills and team needs: Test responsibilities:

Develop test plans, execute campaigns with the Stennis team, troubleshoot, own test operations, write test sequences, review data, engage in hands-on work, coding, designing tooling, and more. Systems work:

Support engine subsystem troubleshooting, partner investigations, system analysis, trade studies, etc. Project ownership:

Lead projects to improve efficiency. Future involvement:

Participate in stage and flight tests, including launch operations and defining test objectives and flight concepts. Ideal candidates are self-starters capable of leading projects, eager to learn, and ready to contribute to a fast-growing startup environment that encourages growth and innovation. Work schedule & travel: Full-time onsite in Long Beach, CA, with ~25% travel to test & launch sites. Occasional weekend work for critical milestones. Rotating shifts (1st and 2nd shift). About You: Valuing diverse perspectives; aerospace experience not required. Bachelor's in science, engineering, technology, or mathematics. Entry-level role; prior research or lab experience in complex engineering systems required. Skills in fluid mechanics, thermodynamics, problem-solving, and collaboration. Ability to lead projects on ambitious schedules, especially with unconventional solutions. Nice to haves: Experience with test operations. Knowledge of combustion devices, valves, heat exchangers, instrumentation. Relativity Space offers competitive salary and benefits, including equity, PTO, parental leave, learning stipends, and more. The hiring range is $97,000—$124,300 USD. We are an equal opportunity employer and value diversity. We do not discriminate based on race, color, religion, sex, sexual orientation, gender identity, national origin, veteran status, or marital status.

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