Mechanical Commissioning Engineer - Liquid Cooling Systems

Wildhorse Recruiting; Texas; On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

401(k) plan

Paid time off

Medical insurance

Dental insurance

Vision insurance

Disability coverage

Job summary

Wildhorse Recruiting seeks a Mechanical Commissioning Engineer to support AI data center liquid cooling projects at Pecos, TX; Fort Stockton, TX; and Point Pleasant, WV. The role centers on liquid-to-chip cooling and associated distribution systems, for L3-L5 commissioning.

The position requires 2+ years in mid-to-senior mechanical commissioning, with on-site and field testing responsibilities. Relocation assistance is available; two weeks onsite followed by one week offsite may apply.

Qualifications

• 2+ years in mechanical commissioning at mid to senior level.
• Hands-on commissioning with data center cooling or complex liquid distribution.
• Ability to read drawings, diagrams, specs, test scripts, and control sequences.
• Experience verifying flow, pressure, temperature, alarms, and equipment response.

Responsibilities

• Review drawings, piping diagrams, submittals, specs, controls sequences, and commissioning scripts for liquid cooling systems.
• Walk down CDUs, manifolds, piping networks, valves, sensors and leak detectors, identifying installation deficiencies.
• Coordinate with manufacturers, contractors, and design engineers on startup procedures for direct-to-chip cooling systems.
• Review flushing, pressure testing, water treatment, and TAB documentation; verify readiness for functional testing.
• Execute tests of coolant flow, differential pressure, temperature control, leak detection and alarms.
• Record test results, maintain deficiency logs, and prepare commissioning reports and turnover documentation.
• Coordinate testing across mechanical, electrical, controls, construction and equipment manufacturers following safety procedures.

Skills

Data center cooling

Field troubleshooting

Mechanical drawings

Team coordination

Commissioning tests

Tools

BMS integration

CDU testing

Job description

Commissioning Engineer — AI Data Center Liquid Cooling

Schedule: Two weeks onsite, followed by one week offsite, for candidates who do not wish to relocate. Relocation assistance is available for candidates interested in moving near a project site. Project locations: Pecos, TX; Fort Stockton, TX; and Point Pleasant, WV.

Seeking Mechanical Commissioning Engineers to test the liquid cooling infrastructure supporting high-density AI and high-performance computing data centers. The primary focus is liquid-to-chip cooling and its supporting distribution systems. This field-based role supports Level 3 through Level 5 (L3–L5) commissioning, from installation verification and equipment startup through functional and integrated systems testing.

Responsibilities

• Review mechanical drawings, piping and instrumentation diagrams, equipment submittals, specifications, controls sequences, and commissioning scripts for liquid cooling systems.
• Walk down coolant distribution units (CDUs), manifolds, piping networks, valves, sensors, leak detection devices, and associated heat rejection connections. Identify installation deficiencies and incomplete work before startup.
• Coordinate with equipment manufacturers, contractors, and design engineers on startup procedures for direct-to-chip cooling systems and other project-specific liquid cooling equipment, including rear-door heat exchangers or immersion cooling systems where installed.
• Review flushing, pressure testing, water treatment, and testing, adjusting, and balancing (TAB) documentation where applicable. Verify that systems are ready for functional testing.
• Execute and document tests of coolant flow, differential pressure, temperature control, leak detection, alarms, and equipment response across the cooling distribution path.
• Verify CDU operation, controls, and transitions between normal and failure conditions according to approved sequences of operation and test scripts.
• Confirm that BMS points, graphics, alarms, and trends accurately represent equipment and sensor behavior observed in the field.
• Participate in IST with electrical and controls teams to verify cooling response during simulated power loss, pump or CDU failure, changes in thermal load, and recovery to normal operation.
• Record test results, investigate performance exceptions, maintain deficiency logs, verify corrective actions through retesting, and prepare commissioning reports and turnover documentation.
• Coordinate testing across mechanical, electrical, controls, construction, and equipment manufacturer teams while following site safety procedures.

Required qualifications

• At least 2 years of mechanical commissioning experience, with the technical depth and responsibility appropriate to a mid- or senior-level position.
• Hands-on commissioning experience with data center cooling systems or complex liquid distribution and process cooling systems.
• Ability to read mechanical drawings, piping diagrams, specifications, test scripts, and controls sequences.
• Experience verifying flow, pressure, temperature, controls, alarms, and equipment response during startup or functional testing.
• Understanding of fluid distribution, heat transfer, and the importance of maintaining cooling availability to critical equipment.
• Strong field troubleshooting, documentation, and coordination skills.

Preferred experience

• Direct commissioning experience with CDUs, direct-to-chip cooling, manifolds, rear-door heat exchangers, or immersion cooling.
• Experience with liquid cooling piping networks, leak detection, water treatment, and BMS integration.
• Direct participation in L3–L5 commissioning or IST on AI, high-performance computing, or hyperscale data center projects.
• Experience developing test procedures and resolving performance deficiencies with equipment manufacturers and design engineers.

Schedule and relocation

Candidates who prefer not to relocate can work a two-week onsite, one-week offsite rotation at the project sites. Relocation assistance is available for candidates interested in moving near a project site.

Company benefits include a competitive compensation package, career growth opportunities, performance incentives and bonuses, paid time off, and eligibility to enroll in a 401(k) plan. Medical, dental, vision, long-term disability, and short-term disability coverage are also available.