Mechanical Site Engineer (Data Center)

We are seeking a detail-oriented and site-focused Mechanical Engineer to support the delivery of data center projects through hands-on supervision, inspection, and verification of mechanical system installations.

This onsite role will focus primarily on HVAC and chilled water systems, ensuring contractor works are executed in accordance with approved designs, specifications, quality requirements, and project standards. The successful candidate will play a key role in monitoring construction progress, coordinating with multidisciplinary teams, supporting commissioning readiness, and contributing to phased handover activities in mission-critical environments.

The ideal candidate will bring strong mechanical site supervision experience, solid technical knowledge of HVAC and chilled water systems, and familiarity with data center cooling requirements, redundancy concepts, phased turnovers, and live environment works.

Key Responsibilities

• Monitor and verify contractor installation of mechanical systems across data center construction activities.
• Confirm compliance with approved design documents, project specifications, quality requirements, and applicable installation standards.
• Oversee installation activities related to chilled water piping, CRAH/CRAC units, pumps, valves, expansion systems, and heat rejection equipment.
• Review contractor submissions, including mechanical shop drawings, P&IDs, method statements, ITPs, risk assessments, and installation documentation.
• Provide technical comments and coordinate resolution of mechanical design, installation, and quality issues.
• Coordinate mechanical interfaces with electrical, CSA, ICT, controls, and BMS teams to ensure alignment across disciplines.
• Verify flushing, pressure testing, system cleanliness, and compliance with OEM installation and startup requirements.
• Support OEM coordination activities and ensure contractor installation practices meet manufacturer requirements.
• Track construction progress and flag schedule, access, resource, and coordination risks impacting mechanical works.
• Participate in site meetings, OAC meetings, coordination reviews, and progress discussions.
• Communicate discipline-specific risks, constraints, and mitigation actions to project stakeholders.
• Witness pre-functional checks, OEM startups, and support integrated systems testing activities.
• Support temporary cooling strategies, phased system turnovers, isolation planning, and commissioning readiness activities.
• Support progress validation for contractor payment applications by verifying completed mechanical works.
• Assist with punch list preparation, closure tracking, as-built drawing review, and handover documentation.
• Support the identification, review, and closure of mechanical NCRs, deviations, and field change requests.