Mechanical & Cooling Commissioning Lead

The Mechanical & Cooling Commissioning Lead is responsible for commissioning mechanical and cooling systems serving the data centre, including chillers, CDUs, pumps, CRAHs/CRACs, cooling towers, heat exchangers, and any liquid cooling infrastructure. This role owns L2/L3 and mock‑run L4 testing for mechanical systems and ensures they perform as designed under realistic load profiles and integrated scenarios, particularly for high‑density AI deployments.

• Plan and execute L2/L3 mechanical tests: installation verification, flushing and cleaning, pressure/leak testing, start‑ups, and initial functional checks.
• Mock‑run L4 functional performance tests for cooling systems: flow rates, ΔT performance, redundancy behavior (N+1), component fail‑over, load ramping, and transient behavior.
• Validate mechanical modules and skids fabricated in the shop once installed on site, confirming performance under real operating conditions.
• Coordinate with Controls/BMS Lead to ensure mechanical sequences of operation are implemented and testable, with correct alarms and trends.
• Contribute to L5 scenario execution involving cooling (e.g., power events with cooling impact, partial plant failures, high‑density thermal ramps).
• Document tests, issues, and resolutions consistently in partnership with the Cx Program & Data Engineer.
• Provide mechanical commissioning input to operations teams to support clean handover and future seasonal testing.

• Strong background in data centre or mission‑critical mechanical/cooling systems, including central plant and room‑level cooling.
• Proven experience leading mechanical commissioning, TAB/FPT, or performance validation on large MEP projects.
• Ability to understand and challenge mechanical sequences of operation and system designs, focusing on testability and resilience.
• Comfortable diagnosing issues during tests and driving corrective actions across design, vendor, and construction teams.
• Clear communication and documentation skills, able to explain mechanical behaviour and risks to non‑mechanical stakeholders.
• 7+ years in mechanical commissioning, TAB/FPT, or operations for data centres or similar mission‑critical facilities.
• Bachelor’s degree in Mechanical Engineering or equivalent experience.
• Familiarity with ASHRAE commissioning guidance and large‑operator mechanical Cx requirements.
• Experience with Cx platforms and data tools (CxAlloy, Procore, Facility Grid).
• Relevant certifications (PE, CxA, BCxP, TAB/NEBB, etc.) are an asset.