Propulsion Fluids Engineer: Valves, Feedlines & Tanks

Cowboy Space Corp.; Seattle (WA); On-site; USD 130,000 - 195,000; Full time

Benefits offered by this job

Equity in Cowboy Space Corp.

Medical, dental, and vision insurance

401(k) retirement savings plan

Paid time off

10 paid holidays per year

Paid parental leave

Relocation assistance

Daily lunch in the office

Job summary

Cowboy Space Corp. in Seattle is seeking a Fluids Engineer to own a critical fluid system from concept through flight.

Depending on priorities, you may work on propulsion fluid design, vehicle propulsion feed systems, tank pressure controls, or vehicle pneumatic systems, collaborating across propulsion, structures, thermal, avionics, and manufacturing. You will move quickly, iterate often, and take full ownership of fluid hardware that directly impacts mission success.

Qualifications

• Bachelor’s degree in Mechanical, Aerospace, Chemical or related field.
• 3+ years designing fluid system hardware for flight vehicles or high‑performance hardware.
• Experience from concept through build, integration and test.
• Strong fundamentals in fluid mechanics, thermodynamics, heat transfer and materials.

Responsibilities

• Own your fluid subsystem from concept through design, analysis, test, and flight.
• Drive fluid designs for minimum mass while meeting pressure, leak and life requirements.
• Design valves, routing architectures, and storage for propellant, pneumatic, and thermal fluids.
• Balance performance, manufacturability, cost and schedule in every decision.
• Perform hand calculations, FEA, tolerance stack‑ups; validate with test/flight data.
• Define qualification and acceptance test campaigns and write procedures.

Skills

Fluid system design

Flight hardware

Concept to test

Fluid mechanics

Thermodynamics

CAD proficiency

ASME Y14.5

Education

Bachelor’s degree in Mechanical Engineering

Aerospace or Chemical Eng background

Tools

NX CAD

SolidWorks

CATIA

Creo

Job description

Cowboy Space Corp. in Seattle is seeking a Fluids Engineer to own a critical fluid system from concept through flight.

Depending on priorities, you may work on propulsion fluid design, vehicle propulsion feed systems, tank pressure controls, or vehicle pneumatic systems, collaborating across propulsion, structures, thermal, avionics, and manufacturing. You will move quickly, iterate often, and take full ownership of fluid hardware that directly impacts mission success.