Jobs at Fluidstack

Design and validate thermofluids systems for large-scale AI data center cooling. Responsibilities include developing cycle models, selecting working fluids, designing heat exchangers and piping, sizing valves and relief systems, analyzing coupled thermal and fluid trades, and validating predictions against test-stand data. The role requires rigorous model calibration, honest reporting of discrepancies, and technical analysis that drives machine design decisions.

Own control architecture for rotating machinery and test rigs, including compressors, motor drives, expansion turbines, and thermofluid loops. Develop safety interlocks, fault handling, speed-based capacity control, and hardware-in-the-loop validation. Tune controls on live machines, investigate model-to-plant discrepancies, integrate production chillers with site BMS and plant systems, and document systems for operations teams.

Own compressor testing from test-cell commissioning through validated performance mapping. Responsibilities include specifying test cells and instrumentation, defining measurement chains and uncertainty budgets, writing test plans and safety interlocks, analyzing data, supporting design changes, and conducting failure investigations. The role focuses on high-pressure, high-speed rotating machinery, thermofluids, refrigeration performance, and data acquisition.

Owns end-to-end aerodynamic and mechanical design of high-speed turbomachinery, including centrifugal compressors, expansion turbines, rotordynamics, magnetic bearing integration, stress analysis, and machine architecture. The engineer will take designs from mean-line analysis and CFD through geometry release, build, test-stand validation, performance-map analysis, and iterative redesign. Work spans advanced cooling systems, novel working fluids, high-speed motor-driven machines, and rapid development from concept to production.

Own the electrical design and integration of high-power machines, including DC buses, inverters, motor drives, magnetic-bearing amplifiers, test-cell power systems, and load banks. Lead EMC, harmonics, bearing-current, insulation, arc-flash, and electrical-safety work through installation and commissioning. Develop safe work practices for energized equipment and bring first-of-a-kind systems to full-rating operation.

Run BIM production for data center sites, including federated model management, clash detection, version control, issue tracking, drawing extraction, prefab packages, and as-built updates. Coordinate consultant uploads, lead weekly clash cycles, verify resolutions, and produce field deliverables. The role requires fast, disciplined Revit and Navisworks production on large MEP-heavy projects. Experience with ACC, BIM 360, fabrication-level modeling, Dynamo, scripting, or point cloud workflows is beneficial.

Own and run the release process from engineering to production: manage drawings, BOMs, ECOs/ECNs, and revision control. Ensure PLM/ERP/MES sync and BOM integrity, gate release readiness with DFM and tolerance checks, and communicate changes across design, supply chain, quality, and production to prevent builds to stale revisions.

Design and engineer mechanical cooling systems for modular data center units, performing hydraulic and heat-transfer calculations, sizing equipment, developing vendor packages (CDUs, pumps, dry coolers), supporting prototypes and initial builds, and validating designs against test/commissioning data.