Lead mechanical commissioning (Levels 1-5) for high-performance AI data centers, owning testing/verification, documentation, on-site operations, and handover for cooling, heat rejection, and liquid cooling systems. Requires 10+ years hands-on data center mechanical commissioning experience and a Mechanical Engineering degree.
250k – 300k
Hybrid10+ YOEHardware Engineering
About the role
Role Scope
Lead mechanical commissioning across flushing, cooling, heat rejection, and liquid cooling systems for high performance data centers, spanning Level 1 through Level 5 commissioning phases.
Drive the Testing & Verification program for mechanical cooling, heat rejection, and data hall thermal systems, working with commissioning agents and engineers from pre-site testing through on-site functional testing.
Own commissioning documentation across multiple projects and sites, tracking issues, test results, and reports with enough rigor to hold up under an owner audit.
Run on-site commissioning operations across general contractors, designers, and vendors: inspections, safety enforcement, progress tracking, and issue resolution.
Close out final operational handover for mechanical systems, confirming every system is ready for service before occupancy.
Requirements
Minimum of 10 years of hands-on commissioning experience.
Hands-on commissioning of data center mechanical equipment: chillers, cooling towers, CRAH/CRAC units, AHUs, CDUs, direct-to-chip liquid cooling, pumps, hydronic piping, and BMS/BAS integration.
Experience running hydronic flushing, cleaning, and pressure and hydrostatic testing on process piping.
Deep knowledge of AABC/NEBB TAB standards.
Built and executed Testing & Verification programs end to end, from pre-site functional testing through on-site startup, troubleshooting, and support.
Participate in design and constructability reviews with commissioning and operations in mind.
Maintain rigorous commissioning records, issue logs, and test reports suitable for owner or insurer audit.
Degree in Mechanical Engineering.
Nice-to-Haves
ASHRAE or BCxA commissioning guideline experience.
Controls or electrical systems knowledge.
Hyperscale or mission-critical data center project experience.
Design and develop next-generation Wafer Scale Engine chips with deep RTL expertise, focusing on high-performance, power-efficient micro-architecture and integration. Requires 8+ years RTL experience and a Master's degree.
250k – 300k
On-site8+ YOEHardware Engineering
Lead Mechanical Engineer, Data Center Design
FluidstackAustin, TX +2
Leads mechanical cooling strategy and design for large-scale AI data centers, owning systems from chip to chiller across multi-site portfolios. Manages engineering team, modular prefab development, and vendor coordination for high-density GPU deployments (75–150+ kW/rack). Requires 10+ years data center cooling experience and BS in Mechanical Engineering.
250k – 300k
On-site10+ YOEHardware Engineering
Advanced Packaging Reliability Engineer
OpenAISan Francisco, CA
Lead reliability engineering for advanced HPC packages in AI systems. Assess mechanical/thermal risks, develop test plans, perform modeling, and drive design optimizations with cross-functional teams.
266k – 445k
Hybrid8+ YOEHardware Engineering
Senior RTL Engineer, Interconnect Design
OpenAISan Francisco, CA
Senior RTL engineer owning microarchitecture and RTL implementation of scalable on-chip and off-chip interconnect fabrics for custom AI accelerators. Requires deep Verilog/SystemVerilog expertise and experience delivering complex SoC interconnects through tape-out.
225k – 445k
Hybrid7+ YOEHardware Engineering
Manager, Mechanical Engineering
EightsleepSan Francisco, CA
Lead mechanical engineering for complex electromechanical consumer hardware products. Manage a small team of mechanical, soft goods, and prototype engineers while providing hands-on technical leadership from concept through high-volume production.