Staff Mechanical Engineer
Lambda· Data Center Business
Hybrid (San Francisco Office (Fremont St)), Hybrid (San Jose Office (First St)), Hybrid (Bellevue Office)$349k - $465kFull-timePosted 1mo ago
About the role
Lambda’s Staff Mechanical Engineer to design and optimize mechanical systems for large-scale AI data centers, focusing on cooling architectures, central plants, and integration with facility infrastructure.
Responsibilities
- 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.
Qualifications
- 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.
- Can balance cooling performance, efficiency, water consumption, reliability, cost, and delivery schedule.
- Communicate clearly across engineering, construction, operations, vendors, and executive stakeholders.
- Hold a bachelor’s degree in mechanical engineering or equivalent practical experience.
Skills
Required:Mechanical design and standards developmentCooling architecture designP&IDs and systems documentation
Benefits
- Health, dental, and vision coverage for you and your dependents
- Wellness and commuter stipends for select roles
- 401k Plan with 2% company match (USA employees)
- Flexible paid time off plan that we all actually use
Last updated Oct 22, 2026. Interested? Apply on the company site.
About Lambda
The Superintelligence Cloud
The gigawatt-scale AI GPU Cloud built for superintelligence. Featuring on-demand & reserved cloud NVIDIA HGX B200, B300, GB200, GB300 and H200 GPUs for AI training & inference.
AI trainingDeep learningGPU CloudInferenceNVIDIA GPUsliquid-ai-recruiting-targetsetter-30setter-30-2026-q1
More open roles at Lambda
- Senior Workday Integration Architect4d agoHybrid (San Francisco Office (Fremont St)), Hybrid (San Jose Office (First St)) · Data Center Business
- Workplace Coordinator4d agoSan Jose Office (First St), San Jose Office (Zanker) · G&A
- Employment Counsel4d agoHybrid (San Francisco Office (Second St)), Hybrid (New York, NY) · G&A
- Head of Tax4d agoHybrid (San Francisco Office (Second St)), Hybrid (San Jose Office (First St)) +1 more · G&A
- Controller4d agoHybrid (San Jose Office (First St)), Hybrid (San Francisco Office (Second St)) · G&A