Senior Mechanical Commissioning Engineer - Data Centres

Are you an experienced Senior Mechanical Commissioning Engineer looking to step into a Dublin-based role delivering large, technically complex projects in a mission-critical environment?

This is a senior, hands-on commissioning role where you’ll take ownership of the mechanical Cx scope from late-stage installation right through to final sign-off and handover. You’ll be heavily involved in planning, coordination, vendor management, and client-facing activity, so this suits someone who is comfortable taking responsibility and leading from the front on site.

The role sits within a well-structured commissioning team and offers long-term project visibility, strong technical exposure, and progression into higher-level commissioning leadership if that’s the direction you want to go.

If you’d like to talk through it in confidence, contact Stephen directly on 01 531 4345 or stephen@breaghrecruitment.com.

Senior Mechanical Commissioning Engineer – Skills & Experience:

• Strong background in mechanical commissioning on large construction projects
• Confident leading commissioning activities rather than just supporting them
• Excellent understanding of mechanical systems, sequencing, and system integration
• Comfortable interpreting P&IDs, schematics, and design documentation
• Strong working knowledge of EHS requirements during live commissioning phases
• Experience dealing with multiple stakeholders in a busy, multi-contractor environment
• Strong organisational skills with the ability to manage deadlines and shifting priorities
• HVAC systems including CRAC, CRAH, AHUs, chillers, evaporative cooling and control
• Pumps, pressure systems, and process water network
• Compressors and ancillary mechanical plant
• Fire protection systems including pump houses and storage tanks
• Understanding of data centre standards such as ASHRAE and LEED
• Strong awareness of redundancy concepts (N 1, 2N)
• Exposure to IST, fuel oil systems, gas systems, or water treatment is a strong advantage

As a Senior Mechanical Commissioning Engineer, you will:

• Take ownership of the mechanical commissioning scope on complex projects
• Coordinate and oversee Mechanical Commissioning Engineers and package teams
• Define commissioning scopes, key dates, and deliverables
• Manage commissioning programmes, milestones, and progress reporting
• Act as a key technical point of contact for mechanical commissioning matters
• Engage in design reviews to ensure systems are commissionable and compliant
• Track and close out mechanical design and process queries
• Plan and manage vendor FATs, FWTs, and site-based commissioning activities
• Coordinate closely with QA/QC teams and Authorised Persons to align approvals
• Prepare, review, and manage commissioning documentation including test scripts and compliance records
• Attend daily and weekly coordination meetings with project teams, vendors, and clients
• Drive safe, structured commissioning execution through to final handover

The Package:
You can expect a salary of at least €90,000 plus a strong overall package and long-term project security in Dublin.

Interviews are moving quickly. If this sounds like something you’d like to explore, apply now or contact Stephen directly on 00353 (0)1 531 4345.

The Breagh Team:
Breagh Recruitment specialise in placing experienced construction and engineering professionals across Ireland and the UK. We work closely with both clients and candidates, focusing on long-term fit rather than quick wins.

We recruit across Mechanical & Electrical Engineering, Commissioning, Project Management, Quantity Surveying, Health & Safety, BIM, and Site Leadership roles in data centres, life sciences, industrial, energy, and infrastructure sectors.

INDME