Mechanical Commissioning Engineer

Coalesce Management Consulting; Genf; Vor Ort; CHF 110.000 - 170.000; Vollzeit

Zusammenfassung

Coalesce Management Consulting is seeking a Mechanical Commissioning Engineer for a Geneva-based, owner-side role on a major global data centre capital programme.

You will develop and oversee the commissioning across HVAC and mechanical systems, execute FAT/SAT, IST, and ensure documentation is thorough for handover. This is a high-contact, fast-moving project with stringent standards.

Qualifikationen

• 7–10 years of hands-on mechanical commissioning experience within data centre, mission-critical, or large-scale MEP environments.
• Direct experience executing and witnessing FAT/SAT and participating in IST programmes for critical mechanical infrastructure.
• Strong technical knowledge across chilled water systems, CRAC/CRAH, cooling towers, pressurisation, HVAC, and associated mechanical plant.
• Methodical approach to documentation — test scripts, punch lists, non-conformance reports, and handover packages.

Aufgaben

• Develop and maintain the mechanical commissioning programme — producing method statements, test scripts, and pre-commissioning checklists across HVAC, cooling, plumbing, and associated mechanical systems.
• Execute functional and performance testing across critical mechanical building services, including chilled water systems and pumping systems.
• Coordinate and participate in IST from a mechanical perspective — validating interactions with electrical and BMS infrastructure.
• Witness and sign off FATs and lead SATs on installation; maintain detailed test records and track non-conformances.
• Own the punch list process from Walk-down to close-out and compile the full commissioning documentation package for handover.

Kenntnisse

Mechanical commissioning

FAT/SAT experience

IST experience

Documentation & handover

Jobbeschreibung

Mechanical Commissioning Engineer | Global Data Centre Capital Programme | Independent Contracting Engagement

We are supporting a global technology leader on one of the most ambitious capital programmes currently underway in Geneva, Switzerland.

We are looking for a Mechanical Commissioning Engineer to join this programme on the owner's side — someone who has built a solid foundation in mechanical systems commissioning and is ready to take ownership of technical delivery in a high-value, fast-moving environment where the detail matters and the standards are uncompromising.

What you will be doing

Mechanical Commissioning Planning

Develop and maintain the mechanical commissioning programme — producing and reviewing method statements, test scripts, and pre-commissioning checklists across HVAC, cooling, plumbing, and associated mechanical systems. Ensure all commissioning activities are properly sequenced and resourced ahead of execution.

Execute functional and performance testing across critical mechanical building services — including chilled water systems, cooling towers, CRAC/CRAH units, computer room air handling units (CRAHUs), pumping systems, and pressurisation equipment. Verify that installed systems perform in accordance with design specifications and owner requirements before handover.

Integrated Systems Testing (IST)

Coordinate and participate in integrated systems testing from a mechanical perspective — validating how cooling and mechanical systems interact with electrical and BMS infrastructure under normal operation, partial load, and failover conditions. Identify and document performance gaps and ensure corrective actions are closed out prior to operational acceptance.

Factory & Site Acceptance Testing

Witness and sign off on factory acceptance tests (FAT) with mechanical equipment vendors and lead site acceptance tests (SAT) on installation. Maintain detailed test records and ensure non-conformances are tracked and resolved.

Punch List & Defect Management

Own the mechanical punch list process from initial walk-down through to close-out — categorising deficiencies, assigning responsibility, tracking resolution, and maintaining an accurate and auditable record of mechanical system readiness at all times.

Compile and review the full mechanical commissioning documentation package — including test reports, as-tested records, O&M submissions, and certificates of completion — ensuring the handover dossier meets client and regulatory standards.

What we are looking for

• 7–10 years of hands-on mechanical commissioning experience within data centre, mission-critical, or large-scale MEP environments


• Direct experience executing and witnessing FAT/SAT and participating in IST programmes for critical mechanical infrastructure — ownership, not observation


• Strong technical knowledge across chilled water systems, CRAC/CRAH, cooling towers, pressurisation, HVAC, and associated mechanical plant


• Methodical approach to documentation — test scripts, punch lists, non-conformance reports, and handover packages


• Tier III/IV data centre experience is a strong advantage


• Able to work effectively across contractor, vendor, and client interfaces without losing pace or rigour

Duration: 5+ months

Language: Professional English is sufficient (French is advantageous)