Mechanical Commissioning Lead at xAI

On-site - Memphis, TN

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The Mechanical Commissioning Lead will drive mechanical system buildout, startup, and handover for xAI’s high-performance data centers, leading a team of technicians, coordinating with contractors and stakeholders, ensuring safe and reliable commissioning, and maintaining documentation.

Requirements

Skills

  • 7+ years of progressive hands-on mechanical commissioning experience in data centers, power plants, semiconductor facilities, or other mission-critical industrial environments, with at least 3 years in a lead or supervisory capacity.
  • Deep expertise in data center cooling systems including large-scale chillers, cooling towers, CRAC/CRAH units, precision air handling, chilled water plants, and high-density liquid cooling technologies.
  • Strong working knowledge of commissioning test equipment (manometers, anemometers, ultrasonic flow meters, pressure/temperature calibrators, power analyzers, etc.).
  • Thorough familiarity with relevant codes and standards (ASHRAE, SMACNA, NFPA, ASME, IMC, LEED, Uptime Institute).
  • Proven ability to read, interpret, and redline mechanical drawings, P&IDs, control schematics, and sequence of operations.
  • Demonstrated leadership experience coordinating multi-discipline teams and managing contractors/vendors in fast-paced construction environments.
  • Current OSHA 30 certification (or equivalent) and strong safety leadership track record.
  • Willingness to travel extensively and work extended hours, nights, and weekends during critical commissioning and startup windows.
  • Prior leadership on multiple hyperscale data center or mission-critical commissioning projects (100+ MW scale preferred).
  • NEBB, AABC, or equivalent Certification in Testing, Adjusting, and Balancing (TAB).
  • Hands-on experience with BMS/BAS controls troubleshooting and integration (BACnet, Modbus, LON, etc.).
  • Knowledge of refrigerant systems, direct liquid cooling, and advanced heat rejection technologies.
  • Proficiency with commissioning management platforms (CxPro, Procore, PlanGrid, or similar).
  • Technical degree or trade school certification in Mechanical Engineering Technology, HVAC, or a related field.
  • Experience implementing Integrated Systems Testing (IST) and Owner’s Project Requirements (OPR) verification.
  • Ability to travel extensively to xAI construction sites and remain onsite for extended periods during peak commissioning phases.
  • Physical capability to work in industrial environments, climb ladders/stairs, lift moderate loads (up to 50 lbs), and wear full PPE for long durations.
  • Valid driver’s license and ability to meet xAI’s driver eligibility requirements.

Responsibilities

  • Lead and execute all mechanical commissioning activities for HVAC systems, chillers, cooling towers, CRAC/CRAH units, pumps, heat exchangers, piping systems, hydronic loops, and associated controls in hyperscale data center environments.
  • Direct functional performance testing, airflow/water flow verification, system balancing, integrated system testing, and system turnover to operations.
  • Oversee troubleshooting and resolution of complex mechanical, controls, and process issues during pre-commissioning, commissioning, and startup phases.
  • Develop, review, and approve detailed commissioning test procedures, scripts, checklists, and documentation in alignment with project specifications, industry standards, and xAI requirements.
  • Lead coordination with EPC contractors, OEM vendors, design engineers, and xAI stakeholders for system energization, startup sequences, and integrated system validation.
  • Mentor, supervise, and provide technical direction to Mechanical Commissioning Technicians and other field personnel; conduct performance feedback and support their development.
  • Champion safety by enforcing strict adherence to LOTO, NFPA, OSHA, and xAI safety protocols; lead daily safety briefings and job hazard analyses.
  • Maintain comprehensive as-built documentation, test records, issue logs, and final commissioning reports; present readiness reports to senior leadership.
  • Support and deliver training programs for operations and maintenance teams on commissioned systems.
  • Participate in constructability reviews, design feedback sessions, and lessons-learned meetings to continuously improve installation quality and future project execution.
  • Manage commissioning schedules, resources, and punch-list resolution to meet aggressive project timelines.

Technologies

BACnetModbusLONCxProProcorePlanGridBMS/BAS

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