Senior Project Manager - Water / Wastewater Division
Location: Slough, Thames Valley / Essex – office based with regular site visits (minimum monthly per site).
Salary: ~£70,000 + bonus + car allowance.
About the Company (Water Division)
Our client is a leading environmental and civil‑engineering contractor with over 50 years of experience in water, drainage, and sewer infrastructure across the UK and Ireland. They specialise in “no‑dig” / trenchless technology (pipe and sewer relining, CCTV inspection, robotic cutting, pipeline access, culvert & tunnel rehabilitation, and full drainage/sewer maintenance services) for a wide range of clients – from governments and local authorities to commercial and residential sectors. The business employs some 180+ people across multiple UK and Ireland locations and has secured significant framework contracts, including a ~£15 million contract for reactive maintenance, sewer cleaning and general network servicing works awarded 2025.
Role Overview – Senior Project Manager
We are seeking a driven Senior Project Manager to lead a portfolio of water and wastewater projects (predominantly sewer and drainage rehabilitation / installation / maintenance) across the Thames Valley and Essex region. This role involves both office‑based project planning, management and coordination – and regular site/client visits (minimum monthly site visits per project).
Key Responsibilities
* Manage a portfolio of projects with combined value in the region of £10 million‑£15 million.
* Lead and oversee a small team of 3‑4 Project Managers (staff and subcontractors), providing guidance, support and oversight of their project delivery.
* Oversee all phases of project delivery: feasibility / design review, planning, execution, monitoring, handover and close‑out, ensuring compliance with health, safety, environmental and quality standards.
* Manage interface and communications with clients, subcontractors, suppliers, local authorities and internal stakeholders.
* Ensure efficient resource allocation across projects, including scheduling, manpower, materials, subcontractors and budget control.
* Report regularly to senior management on project status, risks, forecasts and delivery performance.
* Conduct regular site visits (minimum once per month per site) to monitor progress, compliance, quality and safety.
* Promote and implement the company's trenchless/no‑dig methodology and sustainability principles, supporting long‑term infrastructure integrity and minimal environmental disruption.
Candidate Profile / Requirements
Essential
* Degree in Civil Engineering (or equivalent) – or substantial proven experience in civil engineering relevant to water/wastewater projects.
* Strong background in wastewater / sewer infrastructure projects (rehabilitation, maintenance, relining, drainage systems). Experience with clean‑water systems may be considered if candidate has relevant pipeline / lining / infrastructure experience.
* Demonstrable experience managing multiple projects simultaneously, ideally with a project portfolio of similar scale (£5‑£15 m).
* Experience in supervising and mentoring other PMs or project engineers.
* Knowledge of trenchless technologies (pipe relining, CIPP or similar lining systems, no‑dig methods), sewer & drainage maintenance, and associated health & safety and environmental regulations.
* Strong planning and organisational skills, ability to manage budgets, resources, timelines and risks.
* Excellent stakeholder management skills – capable of liaising with clients, subcontractors, internal teams.
* Self‑motivated, decisive, with strong problem‑solving skills and ability to maintain oversight across multiple sites.
* Willingness and ability to travel regionally (Thames Valley, Essex) for site visits.
Desirable
* Experience specifically in trenchless / no‑dig sewer/pipeline rehabilitation or relining.
* Familiarity with wastewater networks and maintenance contracts, including reactive maintenance and long‑term framework agreements.
* Understanding of UK water‑sector compliance standards, environmental and health & safety legislation.
* Financial acumen – able to manage project budgets, forecasting, cost control.
Please send your CV to k.dickson@calco.co.uk.
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