Mechanical Site Manager

James Lewis Recruitment; Gloucester; On-site; GBP 100,000 - 125,000; Full time

Job summary

A recruitment agency is seeking a Mechanical Site Manager for a major data centre expansion in Gloucester. This freelance role pays £300/day CIS, focusing on overseeing mechanical installations and ensuring safety and high standards through to project completion by Christmas 2025. Candidates should have prior experience in high-spec environments and relevant qualifications.

Qualifications

• Demonstrable experience delivering mechanical packages in live, high-spec environments.
• Valid SMSTS, Black CSCS, and First Aid certifications.
• Full UK driving licence required.

Responsibilities

• Oversee the full mechanical package on site.
• Manage subcontractors and plant logistics.
• Ensure compliance with H&S standards.

Skills

On-site coordination

High standards of delivery

Safety compliance

Documentation management

Education

Qualification in Mechanical or Building Services Engineering (HNC/HND/Degree)

Tools

SMSTS

Black CSCS

First Aid

Job description

Overview

Mechanical Site Manager - Data Centre Expansion Gloucester | £300/day CIS | Freelance | Project Completion: Christmas 2025

A freelance opportunity is available for a Mechanical Site Manager to join the delivery team on a major data centre expansion in Gloucester. The project, valued at over £12 million, is halfway through and due for completion by the end of 2025. This is a live environment upgrade involving the creation of new white space, full mechanical cooling systems, generator replacement, HV/LV infrastructure upgrades, new chiller compounds, and full internal fit out including mezzanine and raised access flooring. It is a technically complex programme requiring strong on-site coordination, high standards of delivery, and the ability to manage subcontractors in a critical environment.

This role is ideal for a mechanical professional with experience in fast-paced M&E environments such as hospitals, pharmaceuticals, laboratories, or critical plant upgrades. Previous data centre experience is not required—sector specialists are already embedded in the wider team. What matters is your ability to manage the site, coordinate works, and maintain high standards of safety, documentation, and delivery.

Key Responsibilities

• Oversee the full mechanical package on site
• Manage subcontractors and plant logistics
• Report on programme and commercial progress
• Ensure compliance with H&S standards
• Liaise with the project management and commercial teams to ensure delivery remains on track
• Be part of a wider site delivery team including Project Managers, fellow Site Managers, and a dedicated QS

Qualifications & Experience

• Demonstrable experience delivering mechanical packages in live, high-spec environments
• Valid SMSTS, Black CSCS, First Aid
• Full UK driving licence
• Qualification in Mechanical or Building Services Engineering (HNC/HND/Degree)

This is a full-time, site-based freelance role paid at £300/day CIS through to project completion. Apply today to start a confidential conversation.