Rocket Lab USA
Aerospace & DefenseDirect Greenhouse career site

Stage Fluids Engineer II

Pay
$100,800 – $168,825 per year
Location
Long Beach, CA · On-site
Job type
Full-time
Level
Senior
Experience
2+ years
Education
Bachelor's degree
Listed
30 days ago

Skills & highlights for this role

  • fluid dynamics
  • thermodynamics
  • valves and pressure vessel design
  • DfM/DfAM

Also useful

  • REFPROP
  • AMESIM
  • GFSSP
  • ANSYS
  • NASTRAN
  • Siemens NX
  • Teamcenter

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.

About the role

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.

Additional 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.

Pay and benefits

Join one of the world's fastest-growing space companies and own a piece of it. In addition to competitive base pay, you'll receive company stock as part of your total compensation package, giving you a direct stake in our success. As we expand to new launch sites, groundbreaking missions, and global markets, your ownership has the opportunity to grow alongside the company.

Our comprehensive benefits package includes our industry-leading Employee Stock Purchase Program (with a 15% discount on company stock), top-tier medical plans (HMO, PPO, and a zero cost HDHP option with a significant HSA company contribution), dental and vision coverage, paid vacation and sick time, 11 paid holidays, flexible spending and dependent care accounts, paid parental leave, disability and life insurance, and a 401(k) retirement plan with company match.

Additional perks include subsidized EV charging, onsite fitness centers (where available), discounted gym memberships, complimentary snacks and beverages, 50% employee discount on our popular merch store, and a variety of other employee discounts.

Level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience.

  • Total Compensation (base and equity) $110,875—$168,825 USD
  • Base Salary $100,800—$151,200 USD
  • WHAT TO EXPECT

We're on a mission to unlock the potential of space to improve life on Earth, but that's not an easy task. It takes hard work, determination, relentless innovation, teamwork, grit, and an unwavering commitment to achieving what others often deem impossible. Our people out-think, out-work, and out-pace. We pride ourselves on having each other's backs, checking our egos at the door, and rolling up our sleeves on all tasks big and small. We thrive under pressure, work to tight deadlines, and our focus is always on how we can deliver, rather than dwelling on the challenges that stand in the way.

For Candidates Seeking to Work in US Offices Only

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Learn more about ITAR here.

Only messages left for this purpose will be considered. A response to your request may take up to two business days.

For Candidates Seeking to Work in New Zealand Offices Only

For security reasons, background checks will be undertaken prior to any employment offers being made to an applicant. These checks will include nationality checks as it is a requirement of this position that you be eligible to access equipment and data regulated by the United States' International Traffic in Arms Regulations.

Under these Regulations, you may be ineligible for this role if you do not hold citizenship of Australia, Japan, New Zealand, Switzerland, the European Union, or a country that is part of NATO, or if you hold ineligible dual citizenship or nationality. For more information on these Regulations, click here ITAR Regulations.

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.

Read the original posting

From Rocket Lab USA's careers page, first listed on Rolev.ai on October 10, 2026. Rolev.ai is not the employer.

How Rolev.ai helps with this application

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Common questions

What is the salary for the Stage Fluids Engineer II role at Rocket Lab USA?

The Stage Fluids Engineer II posting at Rocket Lab USA states compensation of $100,800 – $168,825 per year. It is listed as a full-time position. Final pay may depend on location, experience, and interview evaluation on Rocket Lab USA's official career site.

Where is the Stage Fluids Engineer II job at Rocket Lab USA located?

This Stage Fluids Engineer II position at Rocket Lab USA is located in Long Beach, CA (On-site). Always check Rocket Lab USA's application page for specific state eligibility or relocation policies.

What qualifications are required for Stage Fluids Engineer II at Rocket Lab USA?

For the Stage Fluids Engineer II role, Rocket Lab USA highlights 2+ years of relevant experience; a bachelor's degree; experience with fluid dynamics, thermodynamics, valves and pressure vessel design, DfM/DfAM. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.

How do I apply for the Stage Fluids Engineer II position at Rocket Lab USA?

This listing links directly to Rocket Lab USA's Greenhouse application page. You can apply directly on Rocket Lab USA's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Greenhouse application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.