Engine Design Engineer II, Engine Systems Design & Analysis

Long Beach, California

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.

The Propulsion team at Relativity is focused on developing and delivering highly performant and manufacturable engines for Terran R. Engineers are responsible for the entire lifecycle of their parts, from initial design through production to qualification and flight. The team fosters a culture of bottoms‑up decision‑making, free from technical gatekeeping, where ownership and accountability are key at all levels. But designing engines with a quarter million pounds of thrust is just the beginning.

As the flight configuration enters qualification, the team is now exploring modifications for future engines, including thrust upgrades, new cycles, and design for mass production.

As an Engine Design Responsible Engineer you will own top‑level engine CAD models. Depending on the phase of the program and the engine configuration that you are owning, this role will entail:

• Lead CAD release and configuration control for production engine assemblies, ensuring accurate eBOM structures and smooth downstream integration
• Own engine layout and packaging trades, including definition of Keep‑in‑Zone (KiZ) and Keep‑out‑Zone (KoZ) boundaries
• Design and analyze Integrated Design hardware (fluid manifolds, tubing, ducting, secondary structures) and execute rapid design tweaks to support engine testing
• Define engine assembly tolerances/requirements as defined on Interface Control Diagrams (ICDs), establishing and standardizing best practices across the Propulsion organization for fittings, bolts, seals, etc.
• Champion the change management process and help continuously improve it; own tracking of key engine metrics, like mass and part count
• Partner with the Integration/Manufacturing team by reviewing and continuously improving Process Plans, Work Orders, and Non‑Conformances
• Strive to set downstream stakeholders up for success by enabling increased engine build rates and quality. Provide floor support at times to resolve build issues

• 2+ years of professional design experience
• Bachelor’s degree in an engineering field
• Demonstrated project/technical leadership skills
• Strong understanding of engineering fundamentals in structures, fluids, thermal, and mechanisms
• Experience with large CAD model management, change management, and configuration management
• Experience designing Integrated Design hardware (manifolds, secondary structure, tubing, etc.)
• Attention to detail, thorough, exhibits strong follow‑through. Understands the critical importance of a flawless eBOM that sets downstream stakeholders up for success
• Great Integration/Manufacturing partner. Experience with any Manufacturing Execution System (MES). Addresses DFA/DFM feedback in a timely fashion to set production up for success

• Experience with Siemens NX and Teamcenter, specifically
• Experience in the design of liquid propulsion components and systems
• Experience with Finite Element Analysis (FEA) and commercial tools such as Ansys, Abaqus, or Nastran
• Familiarity with aerospace standards (AS, NAS, SAE, etc.)
• Experience with creating release, mass, and part count reports. Ability to communicate this information to leadership and stakeholders in a clear and concise manner
• Familiarity with Qualification and Acceptance test requirements for flight hardware

At Relativity Space, we are committed to transparency and fairness in our compensation practices. Actual compensation will be determined based on experience, qualifications, and other job‑related factors. Compensation is only one part of our total rewards package. 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.

Hiring Range: $112,000 - $143,000 USD

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.