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# Fluid Systems Engineer

- **Company:** Vast, Inc
- **Location:** Long Beach, CA, United States
- **Contract:** Permanent contract
- **Skills:** Computer-Aided Design, Adobe InDesign, Systems Engineering, Femap, Nastran (Computer-Aided Design Software), Ansys, Teamcenter (Software)
- **Published:** October 13, 2026
- **Apply:** https://startup.jobs/fluid-systems-engineering-vast-10425696

## About the Role

* Bachelor's degree in Mechanical Engineering, Aerospace Engineering, Civil Engineering, Electrical Engineering, Materials Engineering, Physics, Mathematics, or a related technical discipline
 * Experience with fluid, pressurized, propulsion, or environmental control hardware in design, manufacturing, or test
 * Hands-on fabrication, assembly, integration, and/or testing experience
 * CAD proficiency (NX preferred)
 * Strong problem-solving, root cause analysis, and communication skills

Preferred Skills & Experience:

 * Direct ownership of flight or high-reliability fluid hardware from design through test
 * Hands-on experience with AN/MS/VCR fittings, brazed and welded joints, valves, pumps, heat exchangers, and pressurized gas systems
 * Experience with EP propellant feed systems for Hall-effect or ion thruster applications
 * Knowledge of fluid fundamentals: pressure drop, flow, sealing, leak paths, and cleanliness control
 * Experience with oxygen-clean or precision-clean hardware and cleanliness verification
 * GD&T proficiency (ASME Y14.5) and tolerance stack-up analysis
 * Structural analysis experience: FEMAP, Nastran, or ANSYS
 * Familiarity with NX/Teamcenter and PLM or MES systems
 * Experience supporting first article builds in a fast-paced aerospace or commercial space environment

Additional Requirements:

 * Willingness to work evenings and/or weekends to support critical mission milestones

We calibrate level and compensation to the selected candidate's experience and demonstrated capability. We welcome applicants across a range of experience levels to apply.

## Description

As a Fluid Systems Engineer at Vast, you will work hands-on alongside technicians, manufacturing engineers, and cross-functional teams to bring fluid systems to life in a fast-paced, high-ownership environment. The ideal candidate thrives in ambiguity, brings deep hands-on experience with fluid hardware, and can move fluidly between design, analysis, and the shop floor., * Own design, development, and delivery of fluid system hardware from concept through flight across ECLSS, TCS, or propulsion programs

 * Perform fluid analyses, trade studies, and systems engineering tasks using first principles to drive clear design decisions
 * Design and develop pressurized hardware including tanks, valves, regulators, pumps, heat exchangers, tubing, and fittings
 * Execute build, assembly, and integration of fluid hardware on the shop floor alongside technicians
 * Support proof, leak, functional, and environmental testing including pressure decay, helium leak, burst, and TVAC
 * Disposition nonconformances and drive root cause investigation and corrective action
 * Interface with power, thermal, GNC, and avionics teams to ensure clean subsystem integration
 * Lead design reviews with internal teams, suppliers, and customers