Test Engineer

Cowboy Space Corp.

53d•$130,000 - $190,000•Onsite

About The Position

Cowboy Space Corp. is building the infrastructure to power and connect the orbital economy. Our satellites operate in Low Earth Orbit to collect sunlight and enable a new class of capabilities—from powering on-orbit compute, to transmitting energy via infrared lasers (space-to-earth and space-to-space), to delivering secure, high-bandwidth optical data. By rethinking how energy and data are generated and distributed in space, we’re unlocking entirely new ways to operate both in orbit and on Earth. Founded in 2024 by Baiju Bhatt (co-founder of Robinhood), Cowboy Space Corp. is backed by leading investors and built by a team from top aerospace and defense organizations. We’re moving quickly to solve complex technical challenges and build a new category of space infrastructure. The Role How fast we can test will set how fast this program moves. You are being hired to make that cycle short: build the stands, then run them. Fluids, mechanical, instrumentation, and controls, from blank sheet through commissioning into routine operation. Hardware and software, mechanical and electrical, testing components, engines, and full stages. When something misbehaves at two in the morning, you figure out whether it's the article, the stand, or the sensor.

Requirements

4-8 years of relevant test experience: propulsion, fluids, energetics, or industrial systems where a mistake had physical consequences
First-principles depth in fluids, thermo, and structures, enough to reason about a system on a whiteboard before opening a tool
Experience creating P&IDs and building the system they describe
Experience integrating and troubleshooting mechanical and electronic systems together, because that's where the failures live
Experience with high-pressure or hazardous environments, and the habits that come with it
Experience writing and operating test procedures
Enough software to be dangerous: data reduction, control sequences, scripting. Python preferred
Self-direction: you'll often be the only person who knows the state of your system
Strong writing. A procedure and a test report are both writing jobs
Willingness to own large and small tasks alike, with a humble and positive attitude
Bachelor's degree in mechanical or aerospace engineering, or similar

Nice To Haves

Designing cryogenic fluid systems from scratch
Hands-on liquid rocket engine hotfire experience, on the stand rather than adjacent to it
LOX and methane or LNG specifics: cleanliness, materials compatibility, ignition
Control system work: PLCs, sequencing, interlocks, valve and actuator selection
Fabrication literacy (welding, machining, tube bending)
Structural, proof, burst, or environmental test experience alongside propulsion

Responsibilities

Design and build fluid, mechanical, instrumentation, and control systems for component, engine, and stage-level test
Own P&IDs and take fluid system designs from schematic through procurement, fabrication, and checkout
Operate, maintain, and troubleshoot those systems once live, including the electrical and software side
Safely operate high-pressure and cryogenic systems: LOX, LNG, high-pressure gas
Write test procedures people can follow under pressure, then run them as test conductor
Perform hazard analysis and set the safety controls, exclusion zones, and abort criteria for your setups
Instrument tests so they answer the question: sensor selection, calibration, DAQ, and sample rates that survive the actual event
Reduce and present test data, and drive anomalies to root cause rather than a retest
Own your stand project schedules, especially the long-lead items nobody else is watching