Lead Mechanical Engineer, Data Center Design

Our client is building and operating AI data centers at a scale measured in tens to hundreds of gigawatts this decade, driving the next generation of liquid cooling and electrical distribution systems and scaling first-of-a-kind modular designs.

This is the senior mechanical design leadership seat: you set the standard the entire portfolio is built to, and you build the team that maintains it.

• Define and own the mechanical cooling strategy across the portfolio — chip-level thermal interfaces, CDU and coolant distribution, chilled water plants and heat rejection.
• Own the mechanical basis of design, master specifications, standard drawings and sequences of operation for every cooling system.
• Drive the architectural calls: coolant chemistry, chiller topology (air-cooled vs. water-cooled centrifugal), CDU elimination, medium-voltage chiller integration and free cooling for best-in-class PUE and WUE.
• Define modular, prefabricated mechanical assemblies — containment cooling units, chiller skids, pump packages, piping modules — built for rapid deployment with minimal field interfaces.
• Own mechanical design delivery across multiple concurrent programs from concept through IFC, enforcing quality at each milestone and coordinating external MEP consultants.
• Build and manage the mechanical engineering team, and hold chiller, pump and coolant vendors accountable on lead time, quality and performance.

• You've owned mechanical cooling design for hyperscale or high-performance data centers, from basis of design through commissioning.
• Deep command of chilled water systems, air- and water-cooled chillers, direct liquid cooling and heat rejection plant design at 75 to 150+ kW/rack.
• You've built and led a mechanical engineering team and directed external MEP consultants through a full design lifecycle.
• You've developed and enforced design standards and master specs across a multi-site portfolio, not just a single building.
• You've worked owner/developer-side with direct accountability for system performance, not just consultant or EPC scope.

• PE license or Chartered Engineer status.
• CFD (6SigmaET, Ansys Icepak, Flotherm) and Revit/BIM.
• Medium-voltage and 800VDC chiller applications; ASHRAE TC 9.9.