Mechanical Engineer: Active Cooling for Space GPUs | Equity

Cowboy Space; San Carlos (CA); On-site; CAD 140,000 - 419,000; Full time

Benefits offered by this job

Equity

Medical, dental, and vision insurance

401(k)

Paid time off

10 paid holidays

Paid parental leave

Relocation assistance

Office lunch daily

Job summary

Cowboy Space Corp. in San Carlos, CA, is building the orbital energy infrastructure and seeks a Mechanical Engineer – Active Cooling to own the liquid cooling loop for GPU compute hardware.

You will architect the pumped coolant loop, select and size components, and own the mechanical packaging and interfaces for integration in the spacecraft. You will collaborate closely with thermal, power, structures, avionics, propulsion, and software teams to deliver an integrated cooling solution, moving

Qualifications

• BS or MS in Mechanical Engineering, Aerospace Engineering, or related field.
• 3+ years designing or analyzing fluid systems or mechanical hardware in aerospace or high-performance settings.
• Strong fluids fundamentals: compressible/incompressible flow, thermodynamics, heat transfer, and pressure systems.
• Hands-on experience with fluid components including pumps, valves, tubing, and instrumentation.
• Experience taking hardware from concept through build and test, with hands-on integration and test.
• Strong mechanical design fundamentals in mechanics, materials, and thermal systems.
• Proficiency with CAD (e.g., NX, SolidWorks, or similar).
• Experience working in fast-paced, hardware-focused development environments.

Responsibilities

• Own the design of the spacecraft liquid cooling loop for GPU compute hardware from concept through flight, including cold plates, pumps, valves, accumulators, heat exchangers, tubing, fittings, and instrumentation.
• Perform pressure-drop, flow, and thermal-fluid analyses to size the loop and predict system behavior across the full mission profile.
• Design the mechanical packaging, structures, mounts, and mechanisms that house and integrate the cooling loop.
• Design, build, and operate ground testbeds and dev rigs to characterize components and de-risk the flight design.
• Develop and execute proof-pressure, leak, flow, and thermal-vacuum tests to verify flight-worthiness.
• Author and maintain schematics, drawings, interface control documents, analysis reports, and test procedures.

Skills

Fluid systems

Mechanical design

CAD proficiency

Ground test experience

Fast-paced environment

Thermal systems

Education

BS or MS in Mechanical Engineering or Aerospace Engineering

Mechanical or Aerospace Engineering degree

Tools

NX

SolidWorks

Thermal-fluid tools

Job description

Cowboy Space Corp. in San Carlos, CA, is building the orbital energy infrastructure and seeks a Mechanical Engineer – Active Cooling to own the liquid cooling loop for GPU compute hardware.

You will architect the pumped coolant loop, select and size components, and own the mechanical packaging and interfaces for integration in the spacecraft. You will collaborate closely with thermal, power, structures, avionics, propulsion, and software teams to deliver an integrated cooling solution, moving