Site Manager - Windsor

Randstad Construction and Property; Dorney; On-site; GBP 74,000 - 83,000; Full time

Job summary

Randstad CPE seeks an experienced Site Manager to oversee the extension of an operational Water Treatment Works in Windsor. Immediate start for a 3-month contract, with strong potential for ongoing framework work.

You will lead day-to-day site operations, coordinate civils and structural activities, and drive safety and quality on site. The role requires proven UK water sector civil engineering delivery, subcontractor management, and teamwork with project staff.

Qualifications

• Experience delivering civil engineering or building extensions within the UK water sector (WTW / WwTW).
• Strong subcontractor management skills and a collaborative approach with engineering/manager teams.

Responsibilities

• Site Delivery: Manage day-to-day site operations for the building extension, coordinating civils, RC structures, groundworks, and building envelope workstreams.

Skills

Site management

Leadership

Safety leadership

Subcontractor management

Quality control

Job description

Site Manager (Water Treatment Works)

Location: Windsor

Rate: £400 - £450 per day (LTD / Outside IR35)

Duration: 3 Months Initial (Strong potential to move onto subsequent framework schemes)

Start Date: Immediate / ASAP

Project Overview

We are seeking an experienced Site Manager to oversee the construction phase of a new extension to an operational Water Treatment Works (WTW). You will join a fully resourced, collaborative site team-working alongside a Senior PM, PM, Project Engineer, General Foreman, and Supervisors-to drive front-line delivery, subcontractor performance, and rigorous site safety standards.

Key Responsibilities

• Site Delivery: Manage day-to-day site operations for the building extension, coordinating civils, RC structures, groundworks, and building envelope workstreams.
• Team & Subcontractor Leadership: Direct trade gangs and subcontractors, working in tandem with the General Foreman and Supervisors to keep production aligned with short-term lookaheads.
• Health, Safety & Environment: Enforce strict water sector safety standards, manage daily site inductions, sign off on RAMS, and maintain safe working interfaces around live plant assets.
• Quality & Progress Tracking: Oversee Inspection and Test Plans (ITPs), manage site logistics, log daily diaries, and report progress directly to the Project Manager.

Requirements & Qualifications

• Experience: Proven track record as a Site Manager delivering civil engineering or building extensions within the UK water sector (WTW / WwTW).
• Leadership: Strong subcontractor management skills and a collaborative approach working alongside established engineering and manager teams.

Mandatory Certifications

• SMSTS (Site Management Safety Training Scheme)
• CSCS Card (Management / Black or Gold)
• EUSR Category 1 & 2
• First Aid

Desirable Certifications

• TWC (Temporary Works Coordinator)
• AP (Authorised Person - Mechanical / Electrical / Pressure Systems)

Randstad CPE values diversity and promotes equality. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. We encourage and welcome applications from all sections of society and are more than happy to discuss reasonable adjustments and/or additional arrangements as required to support your application.

Candidates must be eligible to live and work in the UK.

For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business.