[Nyx Earth] Propulsion CFD Engineer

Conduct computational fluid dynamics (CFD) analyses for propulsion components and thruster plumes for a modular orbital vehicle. Simulate internal flow in valves, regulators, orifices, injectors, and feed lines; model near-field to far-field plume behavior and compute performance parameters like thrust coefficient and specific impulse. Collaborate with propulsion, structural, and thermal teams, validate CFD against cold-flow and hot-fire test data, and produce documentation for design reviews and certification.