Staff Mechanical Engineer, Data Center Cooling (PTO)

Lambda Inc.; San Francisco, Northern (CA, KY); Hybrid; USD 140,000 - 210,000; Full time

Benefits offered by this job

Wellness stipend

commuter stipend

401k with company match

Job summary

Lambda, The Superintelligence Cloud, is seeking a Mechanical Engineer to design end-to-end cooling systems for large-scale AI data centers. You will craft thermal paths, specify cooling architectures, and manage interfaces across hardware, electrical, controls, and operations to ensure reliability and efficiency.

Applicants should have a bachelor’s degree in mechanical engineering or equivalent and hands-on experience with hydro- and air-cooled systems, P&IDs, and thermal calculations.

Qualifications

• Bachelor's degree in mechanical engineering or equivalent practical experience.
• Experience designing cooling systems for data centers, mission-critical facilities, central plants, or large industrial environments.
• Understand hydronic design, heat transfer, pumping, heat exchangers, chilled-water systems, and heat-rejection equipment.
• Ability to develop and review P&IDs, equipment specifications, mechanical layouts, and engineering calculations.

Responsibilities

• Own cooling-system standards and reference architectures for large-scale AI data centers.
• Design the complete thermal path from GPU and rack heat capture through facility distribution and final heat rejection.
• Translate server, rack, and cluster requirements into coolant temperature, flow, pressure, water-quality, and facility-capacity requirements.
• Develop air-cooled, liquid-cooled, and hybrid cooling architectures for greenfield, retrofit, and partner-operated facilities.
• Coordinate cooling interfaces across hardware engineering, electrical engineering, controls, construction, commissioning, and operations.
• Travel to project sites, manufacturers, and partner facilities as needed.

Skills

Cooling systems design

Hydronic design

Thermal calculations

Project coordination

Clear communication

P&ID review

Education

Bachelor's degree in mechanical engineering

Tools

Revit

Pipe-Flo

AFT Fathom

Job description

Lambda, The Superintelligence Cloud, is seeking a Mechanical Engineer to design end-to-end cooling systems for large-scale AI data centers. You will craft thermal paths, specify cooling architectures, and manage interfaces across hardware, electrical, controls, and operations to ensure reliability and efficiency.

Applicants should have a bachelor’s degree in mechanical engineering or equivalent and hands-on experience with hydro- and air-cooled systems, P&IDs, and thermal calculations.