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Fluidstack · 1 day ago

Mechanical Engineer- Advanced Engineering

San Francisco, CA

Full-time

Onsite

Senior Level

$200K/yr - $300K/yr

7+ years exp

Fluidstack is building the infrastructure for abundant intelligence, partnering with top AI labs and enterprises to unlock compute at the speed of light. The Mechanical Engineer in the Advanced Engineering group will design innovative electrical systems and pioneer thermal and magnetic design solutions for data center infrastructure.

Cloud ComputingCloud StorageGenerative AIGPUInformation TechnologyMachine LearningPrivate CloudSoftware

Responsibilities

Lead mechanical and thermal design of HVDC/LVDC power distribution systems and high-power electronics for multi-gigawatt GPU data center deployments

Design enclosures, structural assemblies, and integrated cooling solutions for high-voltage DC power equipment and power electronics

Perform thermal analysis (CFD) and develop heat dissipation strategies for high-power density systems, including cold plates, heat exchangers, busbars, and airflow management

Solve high-current busbar design challenges including conductor sizing, thermal interface optimization, and electrical contact resistance management for multi-megawatt systems

Address EMI/EMC shielding, creepage/clearance requirements, and mechanical integration of power modules, capacitors, and semiconductor devices in compact, high-reliability packages

Define and execute mechanical and thermal validation testing including structural FEA, thermal cycling, vibration, and environmental qualification for power electronics assemblies

Qualification

Mechanical design experienceThermal managementCAD software proficiencyCFD analysisHigh-voltage DC systemsDesign For ManufacturingUnderstanding of materialsManufacturing processesSelf-starter

Required

7+ years of mechanical design experience in power systems, high-power electronics, or energy infrastructure with strong thermal management background

Deep expertise in structural design, heat transfer, CFD analysis, electronics packaging, and outdoor-rated electrical equipment enclosures

Proficient in CAD software (SolidWorks, AutoCAD) and thermal simulation tools (Ansys Fluent or similar), familiar with high-voltage DC systems and NEC, UL, or IEC standards

Self-starter who thrives in fast-paced environments and can drive complex thermal-mechanical-electrical integration projects independently with minimal oversight

Strong understanding of materials for high-power applications including copper/aluminum alloys, thermal interface materials, potting compounds, and high-voltage insulation systems

Experience with Design For Manufacturing/Assembly principles, manufacturing processes (sheet metal, machining, casting), and bringing designs from prototype through to high-volume production