Senior Project Manager

Senior Project Manager - Water / Wastewater DivisionLocation: Office-based (Slough) (Thames Valley / Essex), with regular site visits (min. once per site per month)Salary: ~£70,000 + bonus + car allowanceAbout 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 is part of a larger group that, as of 2025, employs some 180+ people across multiple UK and Ireland locations. In recent years, the company has secured significant framework contracts - including a ~£15 million contract for water/wastewater network services awarded 2025 for reactive maintenance, sewer cleaning and general network servicing works.Their project turnover spans a broad spectrum, from small repair jobs to multi-million-pound rehabilitation and infrastructure renewal works.Operating with advanced trenchless and civil-engineering techniques, the company emphasises sustainability, minimal disruption, and long-term infrastructure performance - providing trusted turnkey solutions to clients across the UK and Ireland. Role Overview - Senior Project ManagerWe 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 company's trenchless/no-dig methodology and sustainability principles, supporting long-term infrastructure integrity and minimal environmental disruption.Candidate Profile / RequirementsEssential: 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 controlPlease send your CV to k.dickson@calco.co.uk