Senior Mechanical Commissioning Manager

Clear.; Dublin; On-site; EUR 120,000 - 180,000; Full time

Job summary

Clear. is seeking a Senior Mechanical Commissioning Manager to drive global commissioning excellence for complex, large-scale infrastructure projects.

You will lead and support activities across multiple live projects and develop standardised commissioning strategies from planning through handover. The role requires a strong background in HVAC and critical mechanical systems, 10+ years in commissioning, and a PM certification or equivalent experience.

Qualifications

• Degree in Mechanical Engineering or similar is required.
• 10+ years' experience in mechanical commissioning/engineering.
• Experience in data centres or mission-critical facilities is highly desirable.
• Strong understanding of HVAC, cooling, chilled water and critical mechanical systems.
• Project management experience or certification or equivalent practical experience.

Responsibilities

• Lead and support global mechanical commissioning activities across multiple live projects.
• Develop and implement standardised mechanical commissioning strategies from planning through to handover (L0–L6).
• Act as subject matter expert across mechanical systems within mission-critical environments.
• Oversee commissioning of critical mechanical plant and equipment including HVAC, cooling, chilled water, pumps, CRAH/CRAC units and associated systems.
• Drive commissioning planning, scheduling, sequencing, and tag management.
• Lead technical validation workshops and system completion planning sessions.
• Ensure strict adherence to safety systems including PTW, SSOW, and LOTO.
• Manage OFCI / CFCI vendor and contractor interfaces across complex delivery environments.

Education

Bachelor's degree in Mechanical Engineering or equivalent

Job description

Clear are currently supporting a leading global organisation within the mission-critical data centre sector in the search for a Senior Mechanical Commissioning Manager to join their global function.

This is a senior-level appointment responsible for driving mechanical commissioning excellence across complex, large-scale infrastructure projects on a global basis.

Key Responsibilities

• Lead and support global mechanical commissioning activities across multiple live projects
• Develop and implement standardised mechanical commissioning strategies from planning through to handover (L0–L6)
• Act as subject matter expert across mechanical systems within mission-critical environments
• Ensure alignment of mechanical design intent with operational performance requirements
• Oversee commissioning of critical mechanical plant and equipment including HVAC, cooling, chilled water, pumps, CRAH/CRAC units and associated systems
• Drive commissioning planning, scheduling, sequencing, and tag management
• Lead technical validation workshops and system completion planning sessions
• Ensure strict adherence to safety systems including PTW, SSOW, and LOTO
• Manage OFCI / CFCI vendor and contractor interfaces across complex delivery environments
• Develop and review commissioning documentation, test scripts, method statements, and procedures
• Oversee equipment start-up, pre-functional checks, functional testing, performance testing, and integrated systems testing
• Manage punch lists, defect resolution, and structured close-out processes
• Support QA/QC teams to ensure quality-led commissioning delivery and minimal rework
• Drive data-led decision making using completion and commissioning tracking systems
• Identify and mitigate risks across mechanical commissioning execution and system handover
• Provide leadership to commissioning teams and underperforming stakeholders where required

Desired Experience

• Degree in Mechanical Engineering or similar preferred
• 10+ years’ experience in mechanical commissioning and/or engineering within complex infrastructure environments
• Strong background in data centres or mission-critical facilities highly desirable
• Strong understanding of HVAC, cooling, chilled water and critical mechanical systems
• Experience across industrial sectors such as oil & gas, power, pharma, or large-scale infrastructure advantageous
• Proven experience leading commissioning teams in a matrix or multi-stakeholder environment
• Strong understanding of project delivery from planning through commissioning and handover
• Project management experience or certification (or equivalent practical experience)