Costain Group

Southampton, Hampshire, United Kingdom (Hybrid) Job Info Job Identification 102468 Job Category Project Management Posting Date 04/16/2026, 02:01 PM Locations SO21 2SW (Hybrid) Contract Type Permanent Driving Required Yes Security Clearance Required No Job 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. CMDP+ is looking for an Assistant Project Manager to join our Southern Water Framework. 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. Responsibilities Assist with and maintain appropriate systems to enable effective planning and scheduling. Assist in maintaining project controls and in producing project reports. Responsible for project file management using robust version control. Organise key project meetings, and provide secretariat support Management of staff as appropriate, including their development. Assist with maintaining the stakeholder log for internal and external stakeholders. Act as the focal point for project responses to external requests for information. Assist with the monitor of project spend and contribute to the compilation of budgets. Maintains an accurate asset register for the project. Assist with and maintain risk and issue logs, escalating as appropriate Qualifications Degree level qualification in a Civil Engineering allied subject or HND in Civil Engineering and vocational training in Engineering Understanding of Engineering Principles Understanding of construction contract law and forms of contract through experience and formal training. Computer competence (MS Word, Excel, Document control system, Primavera software). Training in Health & Safety and Environmental management Current Driving Licence Water industry experience Degree in Civil Engineering MICE MAPM Computer competence Vocational Training (successful experience of project management) Disability Confident Employer A Disability Confident employer will generally offer an interview to any applicant that disclose they have a disability and meets the minimum criteria for the job as defined by the employer. It is important to note that in certain recruitment situations such as high-volume, seasonal and high-peak times, the employer may wish to limit the overall numbers of interviews offered to both disabled people and non-disabled people. For more details please go to the Disability Confident website: