Lead Mechanical Commissioning Manager · On-Site

Lead Mechanical Commissioning Manager | Data Centre | Midlands | Outside IR35

We are currently supporting a leading Data Centre contractor in the appointment of an experienced Lead Mechanical Commissioning Manager for a major hyperscale data centre project in the Midlands. This is an excellent opportunity to join a high-profile project and take ownership of the mechanical commissioning delivery from pre-commissioning through to client handover.

Role Details:

Job Title: Lead Mechanical Commissioning Manager

Location: Midlands

Duration: 12 Months (with potential Extension)

Start Date: 28/07/2026

Onsite Requirement: 5 days onsite

Key Responsibilities:

• Lead and manage all mechanical commissioning activities across the project lifecycle.
• Coordinate commissioning teams, subcontractors, consultants, and client stakeholders.
• Develop and oversee commissioning plans, schedules, procedures, and documentation.
• Manage commissioning of HVAC systems, chilled water systems, CRAH units, cooling infrastructure, pumps, and associated mechanical plant.
• Drive completion of ISTs (Integrated Systems Testing) and support witness testing activities.
• Ensure commissioning activities are delivered safely, on programme, and in line with project quality requirements.
• Chair commissioning meetings and provide regular progress reporting to project leadership.
• Review and manage commissioning documentation, scripts, test packs, and handover documentation.
• Interface closely with electrical, BMS, and controls teams to ensure seamless system integration.

Essential:

• Proven experience as a Lead Mechanical Commissioning Manager on large-scale Data Centre projects.
• Strong knowledge of mechanical building services commissioning within mission-critical environments.
• Experience managing commissioning of HVAC, cooling, chilled water, and associated mechanical systems.
• Demonstrable experience leading multidisciplinary commissioning teams.
• Strong understanding of commissioning processes, ISTs, and project handover requirements.
• Excellent stakeholder management and communication skills.
• Ability to work independently in a fast-paced project environment.
• Valid right to work in the UK.

Desirable:

• Previous experience on hyperscale data centre projects.
• Commissioning certifications or relevant engineering qualifications.
• Experience working for principal contractors or commissioning consultancies.
• Strong understanding of BMS integration and controls commissioning.
• Experience working within CSA, Mechanical, Electrical, and Commissioning delivery teams.