Senior / Principal Propulsion Engineer

At Relativity Space, we are redefining the future of space exploration by building cutting-edge rockets that meet current demands and enable future breakthroughs. Our Terran R vehicle is designed to efficiently deliver customer payloads to orbit, addressing the increasing need for launch capacity. This is only the beginning; achieving commercial success with Terran R will pave the way for groundbreaking advancements in science, exploration, and innovation that extend beyond the known.Becoming a part of Relativity means embracing a culture of autonomy, ownership, and significant impact across all levels of the organization. You will not only execute tasks but will also tackle challenges that have yet to be solved, contributing to the development of a rocket, a factory, and a pioneering business from the ground up. Regardless of your role—be it in propulsion, manufacturing, software, avionics, or corporate functions—you will collaborate across teams, influence decisions, and witness your contributions materialize rapidly. At Relativity, creativity and technical expertise go hand in hand, and your insights will help shape our collective narrative. This is a unique moment in time; it’s early enough for you to leave your imprint on the product, process, and culture, yet advanced enough that Terran R has become a tangible reality, gaining momentum. The most impactful work of your career awaits. Join us.About the Team:Our Propulsion team is dedicated to the design and production of high-performance, manufacturable engines for the Terran R. Each engineer is accountable for the entire lifecycle of their components, from initial design through production to qualification and flight. We foster a culture that encourages bottom-up decision-making, free from technical barriers, emphasizing ownership and accountability at every level. Designing engines capable of producing a quarter million pounds of thrust is just the beginning; as we move towards flight configuration qualification, the team is exploring innovations for future engines, including thrust enhancements, new cycles, and designs tailored for mass production.About the Role:

Join Relativity Space as a Thermal Analyst II specializing in propulsion systems. In this role, you will be instrumental in analyzing thermal performance, conducting simulations, and ensuring the reliability of propulsion technologies. Collaborate with a dynamic team of engineers, utilizing advanced tools and methodologies to drive innovation in aerospace engineering.

Join Relativity Space as a Staff Thermal Analyst specializing in propulsion systems. In this pivotal role, you will leverage your expertise to analyze and solve complex thermal challenges in rocket propulsion. Collaborate with a dynamic team of engineers in a fast-paced environment, driving innovative solutions that will push the boundaries of aerospace technology.

Join Our Team at Odys AviationAt Odys Aviation, our mission is clear: to revolutionize air travel by creating safe and sustainable aircraft that significantly reduce travel time on the world's busiest routes. Our flagship aircraft, Alta, allows travelers to bypass the congestion of major airports by utilizing city helipads and local airports for journeys under 1,000 miles—representing approximately 40% of all flights. Remarkably, our aircraft can reduce CO2 emissions by an average of 76% over tens of billions of flight miles globally.To achieve these goals, we have launched our UAV, Laila, designed for various applications including commercial logistics, medical transport, humanitarian aid, disaster relief, and defense missions. We are proud to collaborate with launch partners such as Fiji Airways, Honeywell, Aramex, and the US Navy, with first deployments scheduled for 2026 and existing orders already in place.Our team comprises skilled engineers from deep tech and aerospace backgrounds, committed to rapid iteration cycles and expertise in the aircraft certification process. Our collective experience includes developing custom drones, bringing multiple automotive platforms to production, and electrifying a range of transportation vehicles—vehicles that levitate, roll, and fly. We have dedicated our lives to mastering this challenge.Role OverviewOdys Aviation is on the lookout for a Junior to Mid-Level Mechanical & Thermal Design Engineer to bolster our Propulsion Team. In this dynamic role, you will be responsible for the design, analysis, and integration of mechanical and thermal systems that are critical to our high-power hybrid-electric propulsion systems, which include motors, generators, inverters, turbines, and their associated structures and cooling mechanisms.You will collaborate closely with electrical, manufacturing, testing, and flight teams to advance hardware from initial concepts through prototype development, testing, and iterative refinement. This role emphasizes hands-on involvement and offers substantial ownership and a robust growth trajectory as our propulsion systems evolve.

At Relativity Space, we are revolutionizing space travel by designing and manufacturing rockets that meet the demands of today while paving the way for tomorrow's innovations. Our Terran R vehicle is set to deliver customer payloads to orbit, responding to the increasing need for launch capabilities. However, this is merely the beginning. The commercial success of Terran R will create new pathways for scientific advancement, exploration, and innovation—pushing the boundaries of what we know.By joining Relativity, you become part of a culture that prioritizes autonomy, ownership, and impact at every level. Here, you won't just be completing tasks; you will be tackling unprecedented challenges, contributing to the development of a rocket, a factory, and a business from the ground up. Regardless of whether you're in propulsion, manufacturing, software, avionics, or corporate functions, you will collaborate across teams, influence decisions, and witness your contributions come to fruition at an astonishing pace. This is a place where creativity meets technical excellence, and your insights will shape the narratives we create together. Now is a pivotal moment where you can leave your imprint on the product, the process, and the culture, while the Terran R is gaining traction. The most impactful work of your career awaits you. Join us.About the Team: The Interplanetary Sciences Program was founded to broaden access to scientific exploration throughout our solar system. Its goal is to enhance planetary research by making it faster, more cost-effective, and more capable than ever before by reimagining the design, construction, and operation of science missions. Our aim is to empower scientists to deploy instruments to remote worlds without enduring decades of development or exorbitant costs.

Join Relativity Space as a Senior Propulsion Technician and play a pivotal role in revolutionizing space technology. In this position, you will be responsible for testing, assembling, and troubleshooting propulsion systems, working closely with our engineering teams. Your expertise will contribute to our mission of building the world’s first fully 3D-printed rocket.

Join Relativity Space as a Senior Propulsion Engineer within our Integrated Design team, where innovative minds collaborate to revolutionize the aerospace industry. In this advanced role, you will leverage your expertise to design, develop, and optimize propulsion systems for our next-generation launch vehicles. Your contributions will play a vital role in enhancing our capabilities and driving the success of our missions.

At Relativity Space, we are revolutionizing the aerospace industry by creating advanced rockets designed to meet current demands and drive future innovations. Our Terran R vehicle is set to deliver customer payloads to orbit, addressing the growing need for launch capacity. This is only the beginning; achieving commercial success with Terran R will pave the way for new opportunities in science, exploration, and technological advancement, pushing the boundaries of the known. Joining Relativity means becoming part of a culture where creativity, autonomy, ownership, and impact are paramount. Here, you won’t just execute tasks; you’ll tackle previously unsolved challenges, contributing to the development of rockets, factories, and a groundbreaking business model. Collaborating across diverse teams—from propulsion and manufacturing to software and avionics—you will influence key decisions and witness your efforts come to fruition in record time. At Relativity, technical excellence and creative thinking go hand in hand, empowering you to shape the stories we create together. This is a unique opportunity to make your mark on the product, process, and culture of our organization, at a time when Terran R is gaining significant momentum. The most impactful work of your career awaits you. Join us.

At Relativity Space, we are revolutionizing the aerospace industry by designing cutting-edge rockets to meet today's demands and pave the way for tomorrow's innovations. Our Terran R vehicle is set to deliver payloads into orbit, addressing the increasing need for launch capabilities. Achieving success with Terran R will not only transform commercial spaceflight but will also open new avenues for scientific exploration and technological advancements. Joining our team means embracing a culture of autonomy, ownership, and significant impact at every level. Here, you will go beyond merely executing tasks; you will tackle unprecedented challenges, contributing to the development of a rocket, a factory, and a pioneering business from the ground up. Collaborate across various disciplines—be it propulsion, manufacturing, software, avionics, or corporate functions—shaping crucial decisions and witnessing your contributions come to fruition in record time. Relativity is where creativity meets technical excellence, and your input will help shape the narrative of our collective journey. Now is an opportune moment to make your mark on our product, processes, and culture, as we advance with tangible momentum on the Terran R. The most impactful work of your career awaits you. Come join us!

Join Relativity Space as a Senior Propulsion Test Lead Engineer where you will play a pivotal role in our mission to revolutionize space travel. In this exciting position, you will lead the propulsion test team, ensuring the successful testing and validation of propulsion systems for our innovative rocket designs.Your responsibilities will include developing test plans, overseeing test execution, and analyzing data to provide insights that drive product improvements. You will work closely with design and manufacturing teams to ensure alignment on project goals and timelines.

At Relativity Space, we are revolutionizing space technology by creating rockets that address current demands and future innovations. Our Terran R vehicle is designed to transport customer payloads to orbit, catering to the increasing need for launch capacity. This is merely the beginning; achieving commercial success with Terran R will pave the way for groundbreaking advancements in science, exploration, and innovation, driving progress into uncharted territories.Becoming a part of Relativity means joining a team where autonomy, ownership, and impact are present at every level. You won't just carry out tasks; you'll tackle unprecedented challenges, contributing to the development of a rocket, a factory, and an entire business from the ground up. Whether your expertise lies in propulsion, manufacturing, software, avionics, or corporate functions, you'll collaborate across teams, influence decisions, and witness your contributions materialize in record time. Relativity is a place where creativity intertwines with technical precision, and your voice will be instrumental in shaping our collective narrative. This is a unique opportunity to leave your mark on the product, the process, and the culture as we bring Terran R to life. The most significant work of your career awaits you. Join us.About the Team: The Interplanetary Sciences Program was established to broaden access to scientific exploration throughout our solar system. Its mission is to accelerate planetary research, making it more affordable and capable than ever before by reimagining the design, construction, and operation of science missions. The program aims to empower scientists to deploy instruments to distant worlds without the lengthy development timelines and prohibitive costs that have historically been associated with such endeavors.

Join VAST as a Senior Mechanical Engineer specializing in Thermal Control Systems. In this pivotal role, you will lead the design and development of cutting-edge thermal management solutions for our advanced engineering projects. Your expertise will directly contribute to the optimization of our systems, ensuring safety, efficiency, and sustainability.As a key member of our engineering team, you will collaborate with multidisciplinary teams to solve complex thermal challenges, conduct simulations, and implement innovative designs. Your leadership will guide junior engineers, fostering an environment of growth and excellence.

True Anomaly develops technology to help protect space as a critical domain for national security. The company builds autonomous spacecraft, advanced payloads, mission software, and space-based interceptors to support the U.S. and its allies in maintaining space superiority. The Propulsion Engineer (Mid-Senior Level) will join a team focused on designing, building, and testing propulsion systems for projects such as Jackal and Space Based Interceptors. This position involves close collaboration with propulsion and other subsystem teams to advance vehicle capabilities for future space missions. Role overview Lead the design, construction, and testing of propulsion systems. Work with cross-functional teams to develop next-generation space vehicles. Contribute technical expertise to projects that enhance space security. Location This role is based in Denver, CO or Long Beach, CA. Values at True Anomaly Be the offset. Creativity and ingenuity drive the search for asymmetric advantages. What would it take? The team challenges conventional thinking to reach ambitious goals. It’s the people. Team members are valued as the company’s greatest asset.

Join Relativity Space as a Supervisor of Propulsion Technicians, where you will lead a dynamic team dedicated to revolutionizing space technology. In this role, you will oversee daily operations, ensuring high standards of safety, quality, and efficiency in the propulsion department.

About Odys AviationAt Odys Aviation, our mission is clear: we are committed to creating safe and sustainable aircraft that significantly reduce travel time on the world’s busiest routes. Our flagship aircraft, Alta, allows travelers to bypass the common frustrations of large airports by utilizing city helipads and local airports for journeys under 1,000 miles—representing approximately 40% of all flights. This innovative approach also contributes to a notable average reduction of 76% in CO2 emissions across billions of flight miles.To achieve our vision, we have initiated the development of our UAV, named Laila, aimed at revolutionizing commercial logistics, medical transport, humanitarian assistance, disaster relief, and defense operations. We are collaborating with reputable launch partners including Fiji Airways, Honeywell, Aramex, and the US Navy, with our first deployments set for 2026 and firm orders already secured.Our team comprises seasoned engineers from both deep tech and aerospace sectors, dedicated to rapid iteration processes and mastering the aircraft certification journey. Our collective experience includes developing custom drones, producing multiple automotive platforms, and innovating electrified transportation solutions—from those that levitate magnetically to those that fly. We have been honing our skills and expertise throughout our careers to meet this exciting challenge.Key ResponsibilitiesUtilize fundamental electrical engineering principles to design, assess, and enhance electrical systems and subsystems.Develop and execute battery test profiles, including performance assessment and validation tasks.Aid in the development of Battery Management System (BMS) hardware and software, focusing on safety and protection features.Create and document aircraft-grade wire and cable harnesses utilizing Rapid Harness or comparable tools.Construct, assemble, modify, test, and troubleshoot prototype and production-level harnesses and electrical assemblies.

ABOUT ROCKET LABRocket Lab is a pioneering space company that offers comprehensive launch services, spacecraft design and manufacturing, and advanced payload solutions. Our mission is to make space accessible and drive ambitious scientific exploration, Earth observation initiatives, and technology demonstrations designed to tackle climate change and enhance national security.Our Electron rocket ranks as the second most frequently launched U.S. rocket annually, successfully delivering over 230 satellites into orbit. We are also developing Neutron, our next-generation medium-lift, reusable launch vehicle, which aims to support larger constellation deployments. Our Space Systems division is dedicated to designing and constructing a wide array of satellites and payload components, including those selected for NASA missions to the Moon and Mars, as well as components utilized in the James Webb Space Telescope.NEUTRONNeutron represents a highly reusable medium-lift launch vehicle that is poised to deliver the mega constellations of tomorrow, high-assurance payloads, and support human spaceflight. By leveraging Rocket Lab’s successful track record with the Electron program, Neutron promises a cost-effective and dependable launch solution. If you are eager to join a dynamic team and contribute to the development of a revolutionary reusable liquid launch vehicle, this is your chance!PROPULSION DESIGN ENGINEER II / SENIOR PROPULSION DESIGN ENGINEER ILocated at Rocket Lab's headquarters in Long Beach, CA, the Propulsion Design Engineer will play a vital role in designing engine components such as combustion chambers, turbo machinery, and engine layouts for the Archimedes Engine. This position provides an exciting opportunity to engage in the design, analysis, and construction of hardware, while also supporting the Neutron and Archimedes teams in their engine development efforts.

At Relativity Space, we are revolutionizing the aerospace industry by constructing rockets that fulfill current demands and pave the way for future advancements. Our flagship Terran R vehicle is set to transport customer payloads into orbit, addressing the surging need for launch capacity. This is merely the beginning; achieving commercial success with the Terran R will unlock new avenues for scientific exploration, innovation, and groundbreaking advancements that extend beyond our current understanding.Joining the Relativity team means immersing yourself in a culture where autonomy, ownership, and impactful contributions are encouraged at every level. Here, your role transcends mere task execution; you will tackle unprecedented challenges, aiding in the development of a rocket, a manufacturing facility, and an entire business from the ground up. Whether your expertise lies in propulsion, manufacturing, software, avionics, or corporate functions, you will collaborate across diverse teams, influence critical decisions, and witness your efforts materialize swiftly. Relativity fosters an environment where creativity and technical precision coexist, and your insights will play a vital role in shaping our collective narrative. This is an extraordinary moment; it's still early enough for you to make a significant impact on our product, processes, and culture, while also being far enough along that the Terran R is becoming a reality and gaining momentum. The most meaningful work of your career awaits you. Join us.About the Team: Our Engine Manufacturing Department is dedicated to producing high-performance products and innovative manufacturing systems by persistently enhancing cost, quality, and lead times. Through collaborative efforts, accountability, and a commitment to safety, we support the Terran R program. Our responsibilities include providing design feedback on new hardware iterations, developing innovative manufacturing methods, and constructing engine and vehicle components for pre-launch testing. Notable achievements over the past six months include the manufacturing of the first Aeon-R engine, completing thousands of hours of PBF printing, constructing and testing over 50 valves across 26 different iterations, and implementing significant process improvements throughout.

About Rocket Lab Rocket Lab provides launch services, spacecraft design and manufacturing, and satellite components. The company's mission is to make space more accessible for scientific research, Earth observation, and technology demonstrations. With the Electron rocket, Rocket Lab has become the second most frequently launched U.S. rocket, placing over 230 satellites into orbit. Development is also underway on Neutron, a medium-lift reusable launch vehicle designed for larger constellation deployments. The Space Systems division designs and manufactures a wide range of satellites and components, including hardware supporting NASA’s Moon and Mars missions and parts used in the James Webb Space Telescope. Manufacturing at Rocket Lab Manufacturing teams at Rocket Lab turn engineering designs into operational hardware using advanced techniques such as 3D printing. The focus is on efficient project delivery, ensuring satellites and rockets meet customer requirements and expectations. Role Overview: Manufacturing Engineer II / Senior – Electron Propulsion This position is based at the Engine Development Center in Long Beach, CA. The Manufacturing Engineer will drive process improvements and product updates for the Rutherford rocket engine. The role works closely with the Director of Manufacturing Engineering and the Production team, providing essential deliverables for internal leadership, the board of directors, and investors. This opening may be filled at either the Manufacturing Engineer II or Senior Manufacturing Engineer level.

Join Relativity Space as the Manager of Propulsion Development Engineering, where you will lead innovative projects in rocket propulsion systems. Your expertise will guide our team in developing cutting-edge technologies that redefine aerospace. This role requires a strategic thinker with a passion for engineering and a drive for excellence.