The posting, in Rocket Lab's own words
archived Sep 2, 2026ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us. NEUTRON Rocket Lab’s Neutron team is responsible for bringing our new large rocket Neutron and its launch and test sites to life. From designing and testing Neutron’s structures and components, to firing up its new Archimedes engines, to setting up Neutron’s launch pads and test sites across the United States, joining the Neutron team is your opportunity to help launch a new large rocket for the very first time. SENIOR STAGE FLUIDS ENGINEER A Senior Stage Fluids Engineer, Neutron owns the design, build, test, and review of multiple fluid systems across the Neutron launch vehicle. Our team owns all plumbing and systems between the tanks and the engines. Your work within the Fluid Systems department will turn vehicle-level requirements into a fluid network that enables Neutron to operate with aircraft-like reusability and reliability. WHAT YOU’LL GET TO DO Design plumbing systems, components, and their secondary structures. Provide feedback to your peers on their designs, drawings, and methodology. Analyze these systems and components in the harsh and dynamic environments of launch. Review and provide feedback for critical structural analysis of fluid components and systems. Model these systems to characterize and predict system behavior at all conditions. Understand and interpret models of others and work to improve efficacy of modelling. Test and qualify these systems, components, and modules. Manage requirements, realization, and implementation of systems in the larger launch vehicle context. Integrate your hardware into the vehicle. Review data from component, system, and vehicle level testing to optimize and improve future designs. Collaborate with components, propulsion, structures, mechanical, operations, and flight software teams to develop and define vehicle functions. Create tools to enhance the team’s analysis capabilities, streamline workflow and optimize launch operations. Set the standard for design, production, and testing processes. Enforce these standards across the program and beyond. Mentor and grow your peers to strengthen the overall team. Please note: This position can be hired as a Senior I, or Senior II Level. YOU’LL BRING THESE QUALIFICATIONS AS A SENIOR STAGE FLUIDS ENGINEER I: Bachelor’s degree in Mechanical Engineering or relevant engineering discipline. 5+ years of experience in a hardware rich environment. Experience with fluid components design and usage for valves, pressure vessels, flex elements & fittings. Experience with DfM/DfAM, machining processes, and welding processes with a proven understanding of mechanical drafting and GD&T. YOU’LL BRING THESE QUALIFICATIONS AS A SENIOR STAGE FLUIDS ENGINEER II: Bachelor’s degree in Mechanical Engineering or relevant engineering discipline. 8+ years of experience in a hardware rich environment. Experience with fluid components design and usage for valves, pressure vessels, flex elements & fittings. Experience with DfM/DfAM, machining processes, and welding processes with a proven understanding of mechanical drafting and GD&T.