Mechanical Engineer II

<div class="content-intro"><p><span style="font-family: arial, helvetica, sans-serif; font-size: 10pt;">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.</span></p> <p><span style="font-family: arial, helvetica, sans-serif; font-size: 10pt;">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 </span><span style="font-family: arial, helvetica, sans-serif; font-size: 10pt;">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.</span></p></div><div><span style="font-size: 10pt;"><strong>About the Team</strong></span></div> <div><br><span style="font-size: 10pt;">The Stennis Test team designs, builds, and operates test sites to evaluate Terran R's high-energy components, rocket engines, and both booster and upper stages. Team members are hands-on with these large-scale, complex systems, pushing hardware to the limits and directly contributing to flight readiness. The work is fast-paced, highly operational, and collaborative. No aerospace experience required—we welcome fresh graduates as well as those with hands-on backgrounds in aviation, automotive, manufacturing, offshore operations, industrial systems, construction, or adjacent industries. As the Stennis Test site scales to meet growing demand, the team plays a critical role in paving the way for routine, reliable flights of Terran R.</span><br><br><span style="font-size: 10pt;"><strong>About the Role</strong></span></div> <div><br><span style="font-size: 10pt;">As a Propulsion Test Engineer II, you will work with test stands and test articles (high-energy components, engines, and full stages) for Terran R. You'll have the opportunity to see a heavy-lift orbital launch vehicle and its many parts come to life through testing. Test and flight articles are designed and built in our Long Beach factory, then sent to Stennis to undergo rigorous testing. Entry-level engineers at our Stennis facility work in partnership with experienced engineers, technicians, and welders to build and modify test facilities and participate in test campaigns to evaluate complex rocket hardware. You'll solve a variety of technical problems across broad ranges of timeframe, complexity, and impact, and continuously improve processes to move faster and more efficiently. The role includes three focus areas - Design & Build, Operations, and Integration. You'll initially be placed on a team in one focus area, with opportunities to work across focuses as you develop in the role, particularly between Operations and Integration which work closely together.</span><br><br><span style="font-size: 10pt;"><strong>[Design & Build Focus]</strong></span></div> <ol> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Design fluid systems (gas, liquid, cryogenic) including Piping & Instruction Diagrams (P&IDs), analysis, and component selection</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Design structural and mechanical systems including 3D modeling, analysis, and fabrication drawings</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Source components and develop detailed fabrication work instructions</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Bring new test stands to life by managing fabrication, activation, and initial operations</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Design and implement upgrades to operational test stands to enable new test capabilities</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Maintain test stands through preventive maintenance and rapid response to anomalies & equipment failures</span></li> </ol> <div><span style="font-size: 10pt;"><strong>[Operations Focus]</strong></span></div> <ol> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Conduct test operations on high-energy components, engines, and stages</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Control test stand and test article through GUIs and automation while monitoring cameras and telemetry</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Conduct flight acceptance, qualification, and development testing campaigns to validate designs and continuously improve the rocket</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Develop and optimize GUIs, procedures, control automation, and data review processes</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Prepare test articles for testing through inspections, functional checks, leak checks, and managing non-conformances</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Bring new test stands to life and support modifications and maintenance on existing facilities</span></li> </ol> <div><span style="font-size: 10pt;"><em>Operations Engineers typically work a scheduled morning or evening shift</em></span><br><br><span style="font-size: 10pt;"><strong>[Integration Focus]</strong></span></div> <ol> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Manage test articles through test prep, post-test processing, and repairs</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Author work instructions for test articles and coordinate work with technicians and quality inspectors</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Manage non-conformances, author corrective work instructions, and implement part requirements</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Maintain work instructions current with evolving build specifications and drive standardization across sites</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Incorporate feedback and optimize part usage to streamline hardware flow and reduce waste</span></li> </ol> <div><span style="font-size: 10pt;"><em>Integration Engineers typically work a scheduled morning or evening shift</em></span><br><br><span style="font-size: 10pt;"><strong>About You</strong></span></div> <ul> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Bachelor's degree in mechanical engineering, aerospace engineering, or a related field</span> <ul> <li style="font-size: 10pt;"><span style="font-size: 10pt;">No aerospace experience needed—we value unique backgrounds and perspectives</span></li> </ul> </li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Demonstrated ability to safely operate common power tools</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Ability to deliver on tight schedules, especially when unconventional & creative solutions are necessary</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">This role may require travel to production and launch locations, up to 10%</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Valid driver's license to operate vehicles on the test site</span></li> </ul> <div><span style="font-size: 10pt;"><strong>Nice to haves but not required</strong></span></div> <ul> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Proficiency in 3D modeling and drafting, including GD&T</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Strong engineering fundamentals in Thermal Fluid Systems and Structures</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Hands-on fabrication experience for complex assemblies</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Working knowledge of fluid components and ability to understand/develop fluid P&IDs for large-scale test systems</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Experience safely operating complex fluid systems, including high pressure gas, cryogenic fluids, flammables, and hydraulics</span></li> <li style="font-size: 10pt;"><span style="font-size: 10pt;">Technical writing or documentation experience</span></li> </ul> <p><span style="font-size: 10pt; font-family: arial, helvetica, sans-serif;"><strong><span data-contrast="none">Successful candidates must clear a background check administered by the US government to obtain clearance for on-site work at our government partner location in Stennis, Mississippi.</span></strong></span></p><div class="content-pay-transparency"><div class="pay-input"><div class="description"><p><span style="font-size: 14px;">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.</span><br><br><span style="font-size: 14px;">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 <a href="https://px.sequoia.com/relativityspace">here.</a></span></p></div><div class="title">Hiring Range:</div><div class="pay-range"><span>$104,000</span><span class="divider">—</span><span>$156,000 USD</span></div></div></div><div class="content-conclusion"><p><span style="font-family: arial, helvetica, sans-serif; font-size: 10pt;"><strong>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.</strong></span></p> <p><em><span style="font-family: arial, helvetica, sans-serif; font-size: 10pt;"><strong>If you need a reasonable accommodation, please contact us at <a href="mailto:accommodations@relativityspace.com">accommodations@relativityspace.com</a>.</strong></span></em></p> <p><em><strong><span style="font-size: 10pt;">Please note: Relativity Space does not accept unsolicited resumes, candidate profiles, or referrals from recruitment agencies or search firms. Any unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role.</span></strong></em></p></div>