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FluidstackFluidstackAustin, TX

Commissioning Mechanical Lead, Data Centers

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.
  • Managing multiple concurrent project sites.

Skills

Mechanical CommissioningChillersCooling TowersCrahCracAhusCdusLiquid CoolingHydronic PipingBmsBasHydronic FlushingTab StandardsAabcNebb
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