Mechanical Engineer (Data Center MEP Systems)

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. MECHANICAL ENGINEER (DATA CENTER MEP SYSTEMS) SpaceX is looking for an MEP Engineer with deep mechanical and plumbing expertise to design, specify, and commission the cooling and fluid systems that keep our data center infrastructure running. This role sits at the intersection of critical facilities engineering and the physical plant — you’ll be equally comfortable in a design review and walking a mechanical room during startup. RESPONSIBILITIES: Design and specify mechanical cooling systems for data center facilities: chilled water plants, CRAH/CRAC units, air handling units, and cooling towers Own plumbing system design: domestic water, sanitary, storm drainage, makeup water, and process piping for cooling systems Evaluate and specify facility liquid cooling infrastructure (direct-to-chip, rear-door heat exchangers, immersion cooling) Perform heat load calculations, airflow modeling, and capacity planning to ensure design requirements are met Develop piping design, pump sizing, and hydraulic calculations for chilled water and condenser water loops Review and coordinate mechanical/plumbing drawings with architectural, electrical, structural, and fire protection disciplines Support commissioning of mechanical systems: functional performance testing, integrated systems testing (IST), and level 5 commissioning for critical cooling infrastructure Work directly with equipment vendors (chillers, CRAH units, pumps, cooling towers) on technical specifications and factory witness testing Troubleshoot operational issues in existing facilities — water treatment, pump cavitation, control valve failures, capacity shortfalls Support due diligence and technical evaluation for new site selection, includin