Mechanical Engineer - Active Cooling at Cowboyspace · LumiJobs

Responsibilities

As a Mechanical Engineer – Active Cooling, you will be the responsible engineer for the liquid cooling loop that keeps our on-orbit GPU compute hardware temperature controlled. This is a hands-on role that sits at the intersection of fluid systems and mechanical design. You will architect the pumped coolant loop, select and size its component (pumps, valves, accumulators, cold plates, instrumentation, etc) and own the mechanical packaging, structures, and interfaces that integrate it into the spacecraft. You will own this hardware end to end, from concept and analysis through the ground testbeds used to prove it out, qualification, and on-orbit operation.
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, balancing heat rejection, pump power, mass, and reliability.
Design the mechanical packaging, structures, mounts, and mechanisms that house and integrate the cooling loop, and couple it to radiators and the broader thermal control system.
Design, build, and operate ground testbeds and dev rigs to characterize components, validate the loop, and de-risk the flight design ahead of qualification.
Develop and execute proof-pressure, leak, flow, thermal-vacuum, and qualification/acceptance test programs to verify flight-worthiness.
Author and maintain schematics, drawings, interface control documents, analysis reports, test procedures, and release/configuration records.
Select, size, and integrate coolant loop components to meet performance, mass, and reliability requirements, and work with suppliers to ensure high-quality, scalable production.
Diagnose and resolve cooling-system anomalies during integration and test, applying root-cause analysis and implementing corrective actions.
Partner with thermal, power, structures, avionics, propulsion, and software teams to ensure the cooling loop integrates seamlessly within the overall spacecraft architecture.
Embrace a fast-paced development environment, driving quick design cycles, hardware builds, and test campaigns to accelerate the program schedule.

Mechanical Engineer - Active Cooling

Responsibilities

Qualification

Required

Preferred

Benefits

Company

Cowboyspace

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