Senior Fluid Systems Engineer

As a Test Fluids Engineer II at Relativity Space, you will play a pivotal role in the development and testing of our innovative rocket systems. You will be responsible for designing, implementing, and analyzing fluid systems used in our propulsion tests. This position requires a strong engineering background, excellent problem-solving skills, and the ability to work collaboratively in a fast-paced environment.

Join Relativity Space as a Vehicle Hardware Test Engineer II specializing in fluids. In this role, you will contribute to our mission of revolutionizing aerospace manufacturing through innovative testing methodologies. Your expertise will help ensure the reliability and performance of our vehicles, leading to groundbreaking advancements in space exploration.

ABOUT ROCKET LABRocket Lab is a pioneering end-to-end space company dedicated to providing responsive launch services, comprehensive spacecraft design and manufacturing, payload delivery, satellite components, and more. Our mission is to enhance access to space, enabling groundbreaking scientific exploration, Earth observation, and innovative technology demonstrations that address national security and combat climate change.Our Electron rocket has emerged as the second most frequently launched U.S. rocket, successfully delivering over 230 satellites to orbit. We are also developing Neutron, a state-of-the-art medium-lift reusable launch vehicle designed for larger constellation deployments. Our Space Systems division crafts a diverse range of satellites and payloads, including components chosen for NASA missions to the Moon and Mars, as well as for the James Webb Space Telescope.NEUTRONNeutron represents the future of launch vehicles, adept at delivering high-assurance payloads, mega constellations, and facilitating human spaceflight. As a highly reusable platform, it promises a cost-effective and reliable launching solution, building on our successful Electron program. If you're eager to join an elite team and innovate in the development of reusable liquid launch vehicles, this opportunity is for you!SENIOR FLUID TEST ENGINEER I/IILocated at our headquarters in Long Beach, CA, the Senior Fluid Test Engineer will play a crucial role in transitioning test stands into operational settings, ensuring they comply with the rigorous standards necessary for the Neutron program. You will collaborate with the Director of Manufacturing and the Fluid Systems team to establish new test stands, support early component designs, and lead the assembly and testing of Neutron stands.(This position offers the flexibility to be filled at either Senior Engineer I or Senior Engineer II level.)

Join Relativity Space as a Manufacturing Test Engineer II, focusing on Pneumatic Mechanisms & Fluid Assemblies. In this role, you will be instrumental in ensuring the reliability and performance of our innovative rocket manufacturing processes. Your expertise will contribute to the development and execution of comprehensive testing strategies, ensuring that our products meet the highest standards of quality.

ABOUT ROCKET LABAt Rocket Lab, we are pioneers in the space industry, offering comprehensive launch services, spacecraft design, manufacturing, and payload solutions, all aimed at making space accessible to everyone. Our innovative rockets and satellites support vital global missions in scientific exploration, Earth observation, and climate change initiatives, while also enhancing national security and demonstrating cutting-edge technologies.Our Electron rocket is the second most frequently launched U.S. rocket, having successfully placed over 230 satellites into orbit. We are also in the process of developing Neutron, our next-generation medium-lift, reusable launch vehicle designed for deploying large satellite constellations. Our Space Systems division is responsible for designing and building a diverse range of satellites and components, including those selected for NASA missions to the Moon and Mars, as well as equipment used in the James Webb Space Telescope.NEUTRONNeutron is our medium-lift launch vehicle, engineered to deliver the megaconstellations of the future, high-assurance payloads, and support human spaceflight. Leveraging the proven success of our Electron program, Neutron will provide a cost-effective and reliable launch solution.FLUID SYSTEMS ENGINEER IIAs a Fluid Systems Engineer II for the Neutron project, you will take the lead in designing, constructing, and testing the fluid systems integral to the Neutron launch vehicle. You will work closely with a talented team of engineers in the Fluid Systems department, transforming vehicle-level requirements into a fluid network that ensures Neutron operates with exceptional reusability and reliability akin to aircraft standards.WHAT YOU’LL GET TO DOConduct trade studies and sizing using analytical models, hand calculations, or test data to define essential elements of system architecture.Provide mentorship and guidance to team members both within and beyond the fluids team to inform best practices for fluid system design, testing, and operations.Lead critical design, manufacturing, and testing reviews for fluid systems.Collaborate with component design teams to create integrated solutions.

At Relativity Space, we are revolutionizing rocket manufacturing to meet the demands of today and the innovations of tomorrow. Our Terran R vehicle is designed to transport customer payloads into orbit, addressing the increasing need for launch capabilities. This is just the beginning. Achieving commercial success with the Terran R will open doors to advance scientific research, exploration, and groundbreaking innovations that extend beyond the known horizons.Joining Relativity means being part of a culture that promotes autonomy, ownership, and significant impact across all levels. Here, you will not merely execute tasks; you will tackle unprecedented challenges, contribute to the development of a rocket, a factory, and a burgeoning business. Regardless of your role—whether in propulsion, manufacturing, software, avionics, or corporate functions—you will collaborate across teams, influence critical decisions, and witness your contributions come to life in record time. Relativity is a place where creativity and technical precision coexist, and your insights will help craft the narrative of our collective journey. This is a unique moment to leave your mark on the product, the process, and our culture—while the Terran R is actively progressing and gaining momentum. The most meaningful work of your career awaits you. Join us.About the Team:The Stage Manufacturing team is dedicated to transforming design into reality, overseeing the construction of the Terran R’s primary structures. This role goes beyond routine tasks; it involves developing systems that enhance rocket assembly. Our engineers and technicians collaborate closely, providing instantaneous feedback to refine how we build better and faster. With a defined timeline and launch date, the team is responsible for delivering the Terran R, tackling challenges in real-time, optimizing for scalability, and continuously enhancing our processes. As the vehicle evolves, so will our factory, incorporating automation, machine learning, and cutting-edge technologies. What we build here will set the standard for the future of large-scale launch operations.

Join Relativity Space as a Senior Manufacturing Test Engineer specializing in Pneumatic Mechanisms and Fluid Assemblies. In this role, you'll leverage your expertise to enhance manufacturing processes and ensure the highest quality in our products. You will collaborate with cross-functional teams to develop testing methodologies, analyze results, and drive continuous improvements.

ABOUT ROCKET LABRocket Lab is a pioneering space company providing comprehensive launch services, spacecraft design and manufacturing, payloads, satellite components, and more, with the mission to make space accessible. Our rockets and satellites enable crucial and ambitious space missions worldwide, driving scientific exploration, Earth observation, climate change initiatives, national security, and cutting-edge technology demonstrations.Our Electron rocket has emerged as the second most frequently launched U.S. rocket annually, successfully delivering over 230 satellites to orbit. We are also in the process of developing Neutron, a medium-lift, reusable launch vehicle designed for larger satellite constellations. Our Space Systems division specializes in designing and manufacturing a diverse range of satellites, payloads, and components, including those selected for NASA's Moon and Mars missions as well as parts utilized in the James Webb Space Telescope.NEUTRONNeutron represents a next-generation medium-lift launch vehicle capable of deploying tomorrow's mega constellations, high-assurance payloads, and facilitating human spaceflight. This highly reusable platform aims to provide a cost-effective and reliable launch solution, building on Rocket Lab's proven success with the Electron program. If you are eager to join a high-performing team dedicated to innovating reusable liquid launch vehicles, we invite you to explore this exciting opportunity!POSITION: MANUFACTURING ENGINEER II / SENIOR - FLUID SYSTEMSLocated at Rocket Lab's headquarters in Long Beach, CA, the Manufacturing Engineer - Fluid Systems will focus on developing, implementing, and continuously enhancing the manufacturing processes for propulsion components, assembly, and integration. This role requires a strong understanding of additive manufacturing, machining, welding, assembly, integration, tooling, testing, and quality assurance techniques.KEY RESPONSIBILITIES:Develop, execute, and validate precision welding and fabrication processes for tubing components in compliance with aerospace standards.Utilize TIG, MIG, OTW, and other welding techniques to meet specifications.

Founded in 2025, Long Wall Company is dedicated to advancing missile defense technologies for the U.S. and allied nations. With a focus on developing containerized, mass-producible missile defense systems, we strive to enhance global security through rapid and cost-effective flight testing. Our mission is to create defensive technologies that are more affordable, high-performing, rigorously tested, and widely accessible than ever before. Join our innovative team and be part of this critical endeavor.What We SeekMission-Driven Innovators. We are looking for engineers who possess a deep curiosity, view challenges as opportunities for growth, and remain committed to delivering optimal solutions for mission success.Accountability and Teamwork. We value engineers who take full ownership of their contributions and understand that collaboration amplifies success. The best engineers uplift their teammates, fostering a culture of shared expertise that drives our missions forward.Fluid Components EngineerOur aerospace components must withstand extreme conditions, including high temperatures, low temperatures, high pressure, and significant vibrations and shocks, ensuring reliable operation under all circumstances. From separation mechanisms to solenoid valves that control engine functions, Long Wall designs, manufactures, and rigorously tests the majority of its components in-house, necessitating top-tier talent to achieve our goals.

Join Rocket Lab as a Senior Fluid Systems Engineer I, where you will play a crucial role in the design and development of our advanced fluid systems. Your expertise will contribute to cutting-edge projects, ensuring performance and reliability in our launch vehicles. You will collaborate with a talented team, leveraging your skills in fluid dynamics and system integration to drive innovative solutions.

Relativity Space is building rockets that aim to meet today’s launch needs and anticipate future demands. The Terran R vehicle is central to this mission, delivering customer payloads to orbit and expanding launch capacity. Success with Terran R will open doors for new scientific and commercial opportunities, pushing the boundaries of aerospace innovation. At Relativity’s Long Beach facility, teams work with a high degree of autonomy and ownership. Engineers and specialists from propulsion, manufacturing, software, avionics, and corporate functions collaborate closely, making decisions that shape both products and processes. The company values creativity and technical skill, encouraging team members to take on challenges that have not been solved before. Propulsion Team Focus The Propulsion team is responsible for designing and delivering high-performance engines for Terran R. Engineers manage components through every stage: from concept and design to production, qualification, and flight. The team emphasizes collaborative decision-making and accountability, with each member having a direct impact on outcomes. Current efforts include qualifying the flight configuration and developing modifications for future engines. This work covers increasing thrust, exploring new engine cycles, and refining designs for efficient mass production. Working on engines that generate a quarter million pounds of thrust is just the starting point.

A thrilling new era in space exploration has emerged. At True Anomaly, we are on the lookout for talented and ambitious individuals ready to pioneer cutting-edge technology that addresses the engineering, manufacturing, and operational hurdles of space security and sustainability.OUR MISSIONThe peaceful utilization of space is vital for sustained prosperity on Earth, impacting everything from communications and finance to navigation and logistics. True Anomaly is dedicated to developing innovative technology that merges spacecraft, software, and AI to enhance the capabilities of the U.S., its allies, and commercial partners. We are committed to safeguarding global security by ensuring equitable access to space and promoting sustainability for all.OUR VALUESBe the Offset. We forge asymmetric advantages through creativity and ingenuity.What Would It Take? We challenge the status quo to deliver extraordinary results.It’s the People. Our team is our greatest asset, and together we achieve more.YOUR MISSIONJoin us in revolutionizing spacecraft systems! We are seeking passionate candidates with hands-on engineering experience to advance new technologies in space propulsion and fluid systems. As a Propulsion / Fluids Production Engineer, you will have the chance to develop, implement, and optimize production processes for propulsion and fluid systems across various vehicle types at True Anomaly. You will collaborate closely with engineers, technicians, and other stakeholders to create optimized designs and bring them to life for space missions.

About Relativity Space Relativity Space is building rockets for today’s and tomorrow’s missions. The Terran R vehicle is engineered to deliver customer payloads to orbit, meeting a growing need for launch capacity. Success with Terran R will open new doors for science, exploration, and innovation far beyond Earth. At Relativity, autonomy and ownership are part of daily work. Employees tackle complex challenges, help develop rockets and factories from the ground up, and see their impact quickly. Collaboration is central, teams across propulsion, manufacturing, software, avionics, and corporate functions work together and influence outcomes. Creativity and technical rigor go hand in hand here. As Terran R advances, team members help shape the product, process, and culture. About the Avionics Team The Avionics team manages the full lifecycle of Terran R’s electrical systems. This includes designing, building, testing, installing, and operating the hardware that connects and controls all major electrical systems on the vehicle and on the ground. The team works closely across avionics design, manufacturing, and testing, enabling rapid iteration and feedback. Engineers also partner with propulsion, GNC, fluids, and stage engineering groups to ensure seamless system integration and operation.

Relativity Space is building advanced rockets to meet growing launch needs, with the Terran R vehicle at the center of this effort. The company’s work aims to enable new possibilities in science, exploration, and technology. Teams take ownership of their work and see ideas move quickly from concept to reality. The Propulsion team focuses on developing engines for Terran R. Engineers manage their parts through every stage, from design to flight. The group values direct decision-making, accountability, and technical ownership. As Terran R approaches flight configuration qualification, the team is also looking ahead to future engine improvements and scalable manufacturing. Role overview The Fluids Analyst I - Combustion Devices works closely with propulsion engineers to support engine development. This position is based in Long Beach, California. What you will do Work with the propulsion team to study fluid dynamics in combustion devices Run simulations and experiments to improve engine performance Create detailed reports and presentations to share findings

At Relativity Space, we are revolutionizing the aerospace industry by developing innovative rockets tailored to meet both current and future demands. Our Terran R vehicle is set to provide essential launch capacity for customer payloads, paving the way for scientific advancements and exploration. Joining our team means being part of a dynamic environment where autonomy and impact are integral at every level. You'll not only execute tasks but also solve intricate challenges, contributing to the creation of rockets, manufacturing processes, and a thriving business. Collaborate across various teams, influence decisions, and witness your contributions come to life swiftly. Relativity is where creativity meets technical excellence, and your voice will shape our collective journey. Now is the perfect time to make a meaningful impact on our products, processes, and culture as we gain momentum with the Terran R. Your most significant career opportunity awaits—join us!

At Relativity Space, we are revolutionizing space travel by constructing rockets that cater to the demands of today while paving the way for tomorrow's innovations. Our Terran R vehicle is designed to transport customer payloads into orbit, addressing the increasing need for launch capacity. However, this is merely the beginning. The commercial success of Terran R will unlock unprecedented opportunities for scientific advancement, exploration, and innovation, propelling progress beyond our current understanding.Becoming a part of Relativity means joining a culture where autonomy, ownership, and meaningful impact are integral to every role. Here, you will not merely perform tasks; you will tackle challenges that have yet to be resolved, contributing to the development of a rocket, a factory, and a company from scratch. Whether your expertise lies in propulsion, manufacturing, software, avionics, or corporate functions, you will collaborate across diverse teams, influence strategic decisions, and witness your contributions materialize swiftly. Relativity is a place where creativity and technical precision coexist, allowing your voice to shape our collective journey. This moment in history is unique; it is early enough for you to leave your mark on the product, process, and culture, yet advanced enough that the Terran R is tangible and gaining momentum. The most significant work of your career awaits. Join us.About the Team: The Stage Manufacturing team transforms designs into tangible realities, overseeing the construction of Terran R’s core structures. This role is not about monotonous tasks; it’s about constructing the systems that enable rocket assembly. Engineers and technicians collaborate closely, providing real-time feedback to enhance our building processes. With a clear manifest and launch schedule, the team is responsible for delivering on Terran R’s objectives: addressing challenges as they arise, optimizing for scalability, and continuously refining our methodologies. As the vehicle evolves, so too will the factory, presenting opportunities to integrate automation, machine learning, and cutting-edge technologies. What we are building here will establish the blueprint for the future of scaled launches.

At Relativity Space, we're revolutionizing the aerospace industry by building advanced rockets that cater to both current and future demands. Our Terran R vehicle is engineered to efficiently deliver customer payloads to orbit, fulfilling the increasing need for launch capacity. This is merely the beginning; achieving commercial success with Terran R will unlock further opportunities to drive scientific advancement, exploration, and innovation, pushing the boundaries of what is possible.Joining Relativity means becoming part of a culture that values autonomy, ownership, and impactful contributions at every level. Here, you will not simply perform tasks; you will tackle unprecedented challenges, contributing to the development of a rocket, a manufacturing facility, and a pioneering business from the ground up. Regardless of whether you are involved in propulsion, manufacturing, software development, avionics, or corporate functions, you will collaborate across diverse teams, influence critical decisions, and witness the tangible results of your work in record time. At Relativity, creativity and technical excellence go hand in hand, and your insights will shape the narrative we are creating together. We are at a pivotal moment where your contributions can significantly impact our product, processes, and culture, and with Terran R gaining momentum, your most meaningful work is awaiting you. Join us.About the Team: The Stage Fluids team is responsible for designing and delivering the propellant, pressurant, pneumatics, and other fluid systems that transform structures into operational rockets. This team maintains comprehensive ownership over design, production, testing, and flight, ensuring an integrated approach to the functionality of Terran R. Being on-site at the factory allows for close proximity to hardware, facilitating rapid iterations and effective feedback loops across design and manufacturing. You will not merely receive requirements; you will be encouraged to ask insightful questions, collaborate with various partners in the company, and ultimately identify the optimal solutions for Terran R.About the Role:

Embark on an exciting journey in the new space race with True Anomaly. We are on the lookout for talented individuals who are driven by ambition and innovation to create groundbreaking technology aimed at addressing the engineering, manufacturing, and operational challenges of space security and sustainability.OUR MISSIONThe peaceful utilization of space is vital for the ongoing prosperity of our planet—from communications and finance to navigation and logistics. At True Anomaly, we develop pioneering technology at the intersection of spacecraft, software, and AI to enhance the operational capabilities of the U.S., its allies, and commercial partners, ensuring global security and sustainability in space.OUR VALUESBe the offset. We leverage creativity and ingenuity to create asymmetric advantages.What would it take? We challenge the norm to achieve ambitious outcomes.It’s the people. Our team is our greatest asset, and we thrive together.YOUR MISSIONRESPONSIBILITIESDesign, develop, and maintain ground support systems and equipment, adhering to technical specifications, safety standards, and operational requirements.Work closely with senior engineers and cross-functional teams to plan and implement projects, including modifications, repairs, calibrations, and routine maintenance of equipment such as racks, enclosures, and DAQs for system and component-level testing.Interpret engineering drawings, schematics, and technical documentation to facilitate the installation, troubleshooting, and enhancement of support equipment.Generate and maintain comprehensive documentation for all engineering processes, modifications, and maintenance activities to ensure traceability.Design GSE schematics and support the fabrication, setup, and testing of the GSE.Provide on-site technical support for operations during scheduled maintenance and testing activities, ensuring the safe and correct use of equipment.This position demands a proactive mindset, robust problem-solving abilities, and the capacity to collaborate effectively in a fast-paced environment, all while prioritizing safety and quality.

Role overview The Senior Avionics Automation Test Engineer I/II at Rocket Lab USA, Inc. plays a key part in advancing automation for avionics systems. Based in Long Beach, CA, this position centers on creating and implementing automated solutions that support aerospace projects. The work directly contributes to improving the quality and performance of avionics technology. What you will do Design, build, and maintain automation tools for testing avionics systems Collaborate with other engineers to refine and improve test processes Support the reliability and performance of aerospace systems through thorough automated testing