# Mechanical Commissioning Lead **Company**: xAI **Location**: Memphis, TN **Work arrangement**: onsite **Experience**: senior **Job type**: full-time **Category**: Engineering **Industry**: Technology **Wikidata**: https://www.wikidata.org/wiki/Q120599684 **Apply**: https://job-boards.greenhouse.io/xai/jobs/5129306007?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply **Canonical**: https://yubhub.co/jobs/job_df801fe3-23d ## Description ## Job Overview We are seeking an experienced Mechanical Commissioning Lead to lead the buildout, startup, and handover of mechanical systems for xAI's high-performance data centers. In this senior hands-on leadership role, you will direct commissioning, testing, troubleshooting, and turnover of critical cooling, air handling, and fluid distribution systems that support next-generation AI supercomputing infrastructure. You will lead a team of commissioning technicians while working closely with construction, engineering, operations, EPC contractors, and OEM vendors to deliver safe, reliable, and high-quality mechanical systems. This is a full-time, onsite role with extensive travel to xAI data center construction sites across the United States. ## 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. ## Basic Qualifications - 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. ## Preferred Skills and Experience - 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. ## Additional Requirements - 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. ## Skills ### Required - mechanical commissioning - HVAC systems - data center cooling systems - commissioning test equipment - ASHRAE - SMACNA - NFPA - ASME - IMC - LEED - Uptime Institute - OSHA 30 certification - safety leadership - leadership - team management - contractor management ### Nice to have - hyperscale data center commissioning - NEBB - AABC - Testing, Adjusting, and Balancing (TAB) - BMS/BAS controls troubleshooting - BACnet - Modbus - LON - refrigerant systems - direct liquid cooling - advanced heat rejection technologies - commissioning management platforms - CxPro - Procore - PlanGrid - Mechanical Engineering Technology - HVAC - Integrated Systems Testing (IST) - Owner's Project Requirements (OPR) verification --- Source: [Apply at job-boards.greenhouse.io](https://job-boards.greenhouse.io/xai/jobs/5129306007?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)