Mechanical Site Supervisor

Mechanical Site Supervisor W12, West London Permanent or Temp-to-Perm GBP32 per hour CIS / LTD Monday Friday + Overtime Available (JIB Rates when working permanently) The Opportunity We are recruiting for an experienced Mechanical Site Supervisor to support delivery on a GBP9m mechanical installation project within a major West London shopping centre. This is a pre-commencement opportunity, with works starting on site in August, giving you the chance to play a key role from early stages through to completion. You'll be starting before this to assist with planning. The project is expected to run for circa 18 months, with a strong pipeline of further works secured on-site, offering excellent long-term stability. The Role You will take full responsibility for mechanical site supervision, leading site activity and ensuring delivery aligns with programme, safety, and quality standards. The role includes overseeing installation works involving commercial heating systems, including gas-fired boilers, alongside wider mechanical services. You will manage a team of operatives (including subcontractors and agency labour), while working closely alongside the electrical team (interface only no direct management). Responsibilities Supervise and coordinate mechanical installation works from early stages through to completion Oversee installation of HVAC and commercial heating systems, including gas-fired boilers Manage site teams ( operatives) including subcontractors and agency labour Ensure delivery against programme, quality, and H&S standards Read and interpret technical drawings and schematics Interface effectively with electrical teams and wider site stakeholders Drive progress on-site and resolve issues proactively Support commissioning, testing, and full project handover Maintain a strong, compliant health & safety culture Requirements Proven experience as a Mechanical Site Supervisor on commercial / retail projects Strong HVAC knowledge, including gas-fired boiler systems, LTHW, CW, and drainage Good understanding of building services (M&E) SSSTS (essential) Ability to read and interpret drawings and specifications Experience managing teams of labour and subcontractors Strong leadership, organisation, and communication skills Experience with BMS / controls (desirable) Relevant commercial gas experience / awareness highly advantageous Full UK working rights What You ll Get GBP32 per hour (freelance rate) with clear route to permanent Long-term project (18-24 months) with ongoing work beyond completion Opportunity to work on a major retail scheme with repeat projects on site Full JIB package on permanent including benefits and van (if required) Apply If you re a Mechanical Site Supervisor with experience in commercial heating and boiler installations looking for a long-term role in West London, apply now.