Fluid Systems Engineering

Vast

Long Beach · Full-time · Onsite · Posted Oct 13, 2026

At a glance

Employment
Full-time
Workplace
Onsite
Location
Long Beach

About the role

  • Vast is looking for a Fluid Systems Engineer to support the design, development, manufacturing, and integration of fluid systems across our space station and spacecraft programs.
  • Our fluid systems span environmental and thermal control (ECLSS/TCS), pressurized gas and propellant systems, electric propulsion feed systems, and ground support equipment.
  • 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.

Responsibilities

  • 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

Requirements

  • 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 qualifications

  • 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

Benefits

  • Company equity
  • Medical, dental, and vision coverage for employees and dependents
  • Generous paid time off
  • Paid parental leave
  • Short and long-term disability insurance
  • Life insurance
  • 401(k) retirement plan
  • ClassPass credits
  • Personalized mental healthcare through Spring Health
  • Onsite barista, snacks, drinks, and subsidized meals

Skills

  • CAD
  • NX
  • ASME Y14.5
  • FEMAP
  • Nastran
  • ANSYS
  • Teamcenter

Vast

Fluid Systems Engineering

Apply now