Staff Mechanical Engineer

Lambda, The Superintelligence Cloud, is a leader in AI cloud infrastructure serving tens of thousands of customers. Our customers range from AI researchers to enterprises and hyperscalers. Lambda's mission is to make compute as ubiquitous as electricity and give everyone the power of superintelligence. One person, one GPU.

If you'd like to build the world's best AI cloud, join us.

*Note: This position requires presence in our San Francisco or San Jose office location 4 days per week; Lambda’s designated work from home day is currently Tuesday.

What You’ll Do

Own mechanical design standards and reference architectures for large-scale AI data centers.

Develop cooling architectures for greenfield, retrofit, and partner-operated facilities.

Design central plants, heat-rejection systems, hydronic distribution, air-cooling systems, and direct-to-chip liquid-cooling infrastructure.

Perform cooling-load, heat-transfer, hydraulic, pressure-drop, psychrometric, and equipment-capacity calculations.

Develop and review P&IDs, equipment schedules, layouts, specifications, sequences of operation, and basis-of-design documents.

Select and size chillers, cooling towers, dry coolers, pumps, heat exchangers, CRAHs, CDUs, piping, valves, and water-treatment systems.

Evaluate designs for capacity, redundancy, failure isolation, maintainability, efficiency, water use, constructability, cost, and schedule.

Translate GPU, rack, and cluster thermal requirements into facility cooling requirements.

Review partner designs, vendor submittals, construction documents, and equipment packages for compliance with Lambda standards.

Coordinate mechanical interfaces with electrical systems, controls, building structure, hardware engineering, construction, commissioning, and operations.

Support equipment selection, long-lead procurement, factory testing, construction sequencing, commissioning, and system bring-up.

Investigate cooling failures and operational risks, driving lessons back into future designs.

Travel to project sites, manufacturers, and partner facilities as needed.

You

Have experience designing mechanical systems for data centers, mission-critical facilities, central plants, or large industrial environments.

Understand hydronic systems, heat transfer, chilled-water systems, heat rejection, pumping, filtration, and water treatment.

Can develop and review P&IDs, mechanical layouts, equipment schedules, technical specifications, and engineering calculations.

Understand mechanical redundancy, failure domains, maintainability, and operational requirements.

Can evaluate system performance across changing weather conditions and compute loads.

Understand applicable mechanical, plumbing, energy, and safety codes and standards.