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. About the Team:   The Stennis Test team designs, builds, and operates Relativity’s propulsion and stage test stands. Team members are hands-on with large-scale, complex systems including fully integrated engines and stage assemblies, pushing hardware to the limits and directly contributing to flight readiness. The work is fast-paced and highly operational, ideal for those with backgrounds in aviation, automotive, manufacturing, offshore operations, industrial systems, construction, or adjacent industries. You’ll work in a close-knit, dynamic environment where collaboration between technicians, operators, and engineers is not only encouraged, but expected. As the company scales, the Stennis Test team becomes even more critical to unlocking our next phase of growth: proving out full-stage systems and paving the way for routine, reliable flights of Terran R. About the Role:    As a Propulsion Test Technician II, you will perform installation, maintenance, troubleshooting, and operational support activities for propulsion test systems and facilities. This role independently completes routine and moderately complex assignments while supporting engine testing, facility modifications, and continuous operation of test equipment. Responsibilities • Perform installation, operational checkout, troubleshooting, and maintenance of test stand equipment and hardware. • Fabricate, install, troubleshoot, and maintain fluid system tubing, piping, and associated hardware. • Assemble, install, maintain, and replace instrumentation and sensors used for propulsion test systems. • Execute work in accordance with engineering procedures, specifications, and test instructions. • Diagnose and resolve routine equipment and system issues. • Perform disassembly, inspection, precision cleaning, and reassembly of valves, regulators, and related components. • Support modifications to existing test stands and construction of new testing facilities. • Monitor inventory levels for consumables, tooling, and equipment. • Identify equipment conditions requiring corrective maintenance. • Provide day-to-day assistance to less experienced technicians during routine work. • Perform other duties as assigned. About You:     Experience in medium- to heavy-industrial maintenance, instrumentation, propulsion testing, data acquisition and control systems, avionics hardware, mechanical systems, or related technical work; or an Associate's degree in a related mechanical or electrical technical discipline. Ability to: • Perform assigned work with limited supervision. • Interpret engineering drawings, procedures, and technical documentation. • Troubleshoot mechanical or instrumentation systems. • Safely operate fabrication tools and testing equipment. • Communicate equipment status and maintenance findings. Mechanical Focus • Experience installing and maintaining fluid systems and mechanical components. Instrumentation Focus • Experience installing and maintaining sensors, instrumentation, and electronic test equipment. Nice to haves but not required:     • Experience with instrumentation, data acquisition, or avionics systems. • Experience fabricating and installing fluid system tubing and hardware.   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. 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: $29.81—$44.71 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. If you need a reasonable accommodation, please contact us at accommodations@relativityspace.com. 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.