Lead Data Center MEP Engineer - Liquid Cooling & Critical Infra

Millennium Management LLC; United States; On-site; USD 175,000 - 250,000; Full time

Job summary

Millennium Management LLC is seeking a Data Center MEP Engineer to lead end-to-end liquid cooling design and commissioning for our high-density data center environments in New York. The role covers mechanical and electrical infrastructure, from chillers and CRAC units to UPS and PDUs, with an emphasis on reliability, risk management, and global site collaboration.

You will develop hydraulic models, validate cooling capacity, and oversee lifecycle management and documentation, while traveling up

Qualifications

• 5+ years of hands-on data center MEP engineering experience in enterprise, hyperscale, or colocation environments

Responsibilities

• Lead the end-to-end design, commissioning, operation, and continuous improvement of liquid cooling infrastructure, including direct liquid cooling, cold-plate assemblies, rear-door heat exchangers, and related systems
• Develop hydraulic models, heat-load calculations, and thermal simulations to validate cooling capacity for high-density rack deployments
• Define and maintain liquid cooling distribution architecture, including cooling distribution units, manifolds, secondary loops, leak detection, and integration with chilled water or adiabatic dry-cooler plants
• Oversee the design, commissioning, lifecycle management, and maintenance of critical mechanical systems, including chillers, cooling towers, dry coolers, CRAC and CRAH units, air handling units, and humidification systems
• Support the design, review, and commissioning of critical electrical infrastructure, including UPS systems, PDUs, switchgear, generators, transfer switches, and distribution boards
• Act as Owner’s Engineer for MEP capital projects, managing contractor designs, RFIs, submittals, change orders, schedules, costs, risks, and equipment acceptance testing
• Maintain critical-facility documentation, including MOPs, SOPs, EOPs, engineering standards, design guides, and commissioning records, while supporting change management and risk assessments
• Monitor infrastructure performance and capacity, drive efficiency improvements, support audits and compliance requirements, and report key availability, capacity, PUE, and WUE metrics to senior leadership

Skills

Liquid cooling

Gas/liquid cooling theory

Chilled water systems

Pumps and hydraulics

Electrical systems knowledge

Documentation & standards

CAD/BIM tools

Project coordination

50+ travel%

Tools

AutoCAD/BIM (Revit MEP)

6SigmaDC

Future Facilities

Job description

Millennium Management LLC is seeking a Data Center MEP Engineer to lead end-to-end liquid cooling design and commissioning for our high-density data center environments in New York. The role covers mechanical and electrical infrastructure, from chillers and CRAC units to UPS and PDUs, with an emphasis on reliability, risk management, and global site collaboration.

You will develop hydraulic models, validate cooling capacity, and oversee lifecycle management and documentation, while traveling up