Senior Propulsion Technician II, First Shift

Company: Relativity Space
Location: Long Beach
Posted on: February 14, 2026

Job Description:

Job Description 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. 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 engine manufacturing department's mission is to product high performing products & manufacturing systems by continuously innovating on cost, quality, and lead time. Through cross-functional collaboration, high levels of accountability, and a focus on safety we support the Terran R program. We are responsible for providing design feedback on new hardware iterations, developing new manufacturing methods and systems, and ultimately building engine and vehicle hardware for testing prior to our first launch. Our team's highlights from the last 6 months include the MDC of the first Aeon-R engine, completing thousands of hours of PBF printing, building and testing over 50 valves of 26 different iterations, and implementing large scale process improvements along the way. About the Role: As a Senior Propulsion Technician, you will be on the front line of fabrication and assembly of the Aeon-R engine, as well as scaling manufacturing operations. This is a unique opportunity to join an experienced team and build the skills necessary to create robust and highly tuned engine systems. You will be hands-on with hardware from day 1, so strong attention to detail and drive to grow your skills are necessary traits for the role. You will interpret work instructions and engineering drawings to complete the necessary tasks, while providing valuable feedback to the team on necessary improvements. This role will be involved in several in-house processes and support resources such as precision cleaning, hydrostatic proof testing, flow testing, and engine assembly. In order to be successful in this role, you must be someone who thrives in ambiguity and is able to efficiently complete the task at hand. You must have the passion, tenacity, and resolve to work through challenging issues unique to rocket engines. You are someone who has come from a fast-paced manufacturing environment, preferably in the space industry, and have worked hands-on while collaborating effectively with multidisciplinary groups. More specifically, we are looking for someone with strong communication skills, desire for growth, experience working with high pressure systems, and willingness to learn from and collaborate with engineering and technician staff. About You: Experience working on engines, with a primary focus on engine components. Familiarity with architecture of a Gas Generator cycle engine and all associated nomenclature. Experience with high pressure fluid system development and testing such as hydrostatic proof, pneumatic leak check, and flow testing. Familiarity with electrical and mechanical system integration. Ability to read and interpret work instructions, and engineering drawings. Strong technical and interpersonal, written and verbal communication skills. Nice to haves but not required: Familiarity with 5S manufacturing principles. Familiarity with Lean Manufacturing principles. Experience transitioning from development into high-volume production. 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: $35.25—$45.65 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.

Keywords: Relativity Space, Irvine , Senior Propulsion Technician II, First Shift, Engineering , Long Beach, California