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Stage Fluids Engineer II

Rocket Lab
Long Beach, CA Full Time USD 110,875 - 168,825 p.a. Sep 17, 2026

About the Job

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 N...

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 Ne...

Design plumbing systems, components, and their secondary structures.

Key Responsibilities

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.

Required Skills & Abilities

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.
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.

Qualifications

Experience: 2 years experience

Work Authorization

Citizenship of AU / NZ / EU / NATO

Apply now

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