Description At CMDP we believe that people matter. We know that to build successful, creative teams we need a diverse workforce that can deliver new innovative ways of thinking. We provide an environment where you will have the freedom to develop and grow to your full potential. MWH Treatment and Costain Group are part of the CMDP joint venture that will deliver a range of construction schemes to maintain and improve Southern Water’s water supply and wastewater treatment works within the South and Southeast regions. The Joint Venture has been set up specifically to execute the 5-year (2025 – 2030) AMP8 capital delivery framework. We will be delivering a programme of works up to £1bn over the 5-year period consisting of both heavy civil engineering and mechanical and electrical activities. Otterbourne is a major Water Supply Works located between Southampton and Winchester supplying water to the surrounding area of over 250,000 homes. As part of Southern Water’s AMP8 investment programme the Works will be undergoing major upgrades including new pre-disinfection treatment and wastewater recovery treatment streams, plus a programme of works to mitigate risks with power resilience. Design efforts in evaluating process solution options are already underway to inform design development and a construction to programme that will run to 2030 to deliver the project’s DWI Regulatory outputs. As Site manager, you will oversee the project from start to finish, ensuring it is completed on time and to budget, and within the quality standards while prioritising the safety of everyone on site. At Costain, we believe diverse perspectives drive innovation. If you’re passionate about making a positive impact and think you can bring value to our team, we’d love to hear from you—even if you don’t tick every box. Your unique skills and experiences could be exactly what we need. LI-BM1 Responsibilities Responsibilities Manage and coordinate site teams, subcontractors, and stakeholders. Coordinating all operational activities, ensuring the project is executed according to plans, specifications and compliant with health and safety regulations. Accountable for SHEQ (Safety, Health, Environment & Quality) performance of Projects, including undertaking and record findings of weekly SHEQ tours. Oversee the management of site based Supervisors, Delivery Teams and relevant areas of the supply chain. Liaison with the Client’s Operational staff to ensure Key Performance Parameters are met or exceeded. Compile and Collate final contract documentation, Safe to operate (STO), “As-built” drawings, test sheets, inspection & test plans etc. for inclusion into Operation & Maintenance Manuals and health and safety files Input into works information with the commercial teams to ensure project scope is met in full or areas identified as requiring alternative contractor input. Seek out, highlight and promote products and working practices that actively reduce the carbon used on the projects you are involved. Monitoring work progress, ensuring quality standards are met, and resolving any issues or deviations from the project plan. Knowledge, Skills, and Experience Essential Knowledge and Experience in the water industry Commercial and Contractual understanding & awareness. Have knowledge and experience of working to a budget and programme Effective management of site team and sub-contractors. Excellent customer relationship skills Desirable Degree in Civil Engineering Experienced Temporary Works Coordinator (CITB) Qualifications Essential To have a certificate in Site Management Safety Training Scheme (SMSTS) Relevant management CSCS card SEATS ((Site Environmental Awareness Training Scheme) or approved Partner internal equivalent course attended 3 day First Aid at Work course inc. defibrillator Desirable Degree, NVQ 6 or HND level qualifications Extensive experience in M&E/construction industry IOSH Modern COSHH Management Certificate