# Stage Fluids Engineer II at Rocket Lab > United States · Mid-level · Software engineering · open. Source: https://alderhq.app/jobs/greenhouse%3Arocketlab%3A7551977003 (read 2026-11-05). ## Facts (observed) - Company: [Rocket Lab](https://alderhq.app/companies/rocket-lab) - Location text: Long Beach, CA; EDC - Where it can be done from (inferred): United States (evidence: "Location: Long Beach, CA; EDC") - Posted: 2025-12-09 (331 days ago) - First seen by alder: 2026-11-03 · last verified: 2026-11-04 - Reposted: 0 times · edited: 0 times - Apply on the employer's site: https://job-boards.greenhouse.io/rocketlab/jobs/7551977003 - Skills listed (inferred): Python ## Pay and sponsorship - Posted pay: $111k–$169k per year (from the listing's pay field) - Market band for similar posted roles (Los Angeles, n 104): p25 $130k, median $130k, p75 $138k ## Description (the employer's text) ### ABOUT 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. ### STAGE FLUIDS ENGINEER II A Stage Fluids Engineer II owns the design, build, and test of their fluid systems across the Neutron launch vehicle. Our team owns all plumbing and fluid 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. - Analyze these systems and components in the harsh and dynamic environments of launch. - Model these systems to characterize and predict system behavior at all conditions. - Test and qualify these systems and components. - 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. ### YOU’LL BRING THESE QUALIFICATIONS - Bachelor’s degree in Mechanical Engineering or relevant engineering discipline. - 2+ years of experience in a hardware rich environment. - Strong understanding on how to start, execute, and complete an engineering project. - Strong engineering fundamentals in fluid dynamics and thermodynamics - Working knowledge of how to select and design around fluid components such as valves, pressure vessels, flex elements & fittings. - Working knowledge of DfM/DfAM, machining processes, and welding processes. - Working knowledge of integration processes & quality control relevant to fluid systems & components. ### THESE QUALIFICATIONS WOULD BE NICE TO HAVE - 4+ years of experience in a fast-paced aerospace environment where you have completed difficult projects while collaborating effectively with other key groups. - Strong understanding of how to design for classic aerospace constraints: minimizing mass while maintaining manufacturability, function, and low costs. - Ability to read, write, and manage plumbing & instrumentation diagrams. - Strong understanding of mechanical drafting and GD&T. - Ability to earn trust, maintain positive professional relationships, & contribute to a culture of inclusion. - Experience working with a distributed team across the globe. - Advanced degree in a fluid mechanics-heavy field. - Experience with oxygen, methane, and/or cryogenic systems. - Experience using fluids analysis tools such as REFPROP, AMESIM, and/or GFSSP. Alternatively, have built your own fluid network solver in Python, Excel, or other tools. - Experience using mechanical analysis tools such as ANSYS or NASTRAN. - Experience using Siemens NX & Teamcenter. - Proven ability to practically apply engineering fundamentals to solve real, complex problems. - Demonstrated ability to rally a team to make & execute good decisions in a fast-paced environment with limited information. This position may require prolonged periods of sitting, standing, walking, computer work, and occasional exposure to moderate levels of noise, dust, and fumes in production areas Anticipated annual equity grant value is designed around function, level, experience, and other factors; realized value depends on vesting and stock-price performance. --- Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/greenhouse%3Arocketlab%3A7551977003 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.