Senior Commissioning Manager
Costain have won extensive work across the water sector this year to support the AMP 8 investment cycle. We have been appointed by United Utilities as one of 7 partners to the Enterprise, delivering £5\.5bn of projects in the Asset Management Period 8 (AMP8\) between 2025 – 2030, and AMP 9 (2030 – 2035\). Our scope is to provide project management, design, construction and commissioning services on design and build schemes throughout the North West and Cumbria region covered by United Utilities. Projects vary in value covering both infrastructure and non\-infrastructure assets on water and wastewater sites with wider Enterprise partners.
The Senior Commissioning Manager is responsible for leading the planning, execution, and delivery of commissioning activities across complex water and wastewater projects. This role ensures that systems, assets, and processes are safely and efficiently brought into operation, meeting regulatory, client, and performance requirements.
You will work closely with design, construction, and operations teams to deliver high\-quality, compliant, and fully functional water treatment and distribution systems.
Responsibilities: Lead and manage commissioning activities across multiple water projects
Develop and implement commissioning strategies, plans, and procedures
Coordinate with design, construction, and operations teams to ensure smooth system integration
Oversee testing, inspection, and validation of mechanical, electrical, instrumentation, and control systems (MEICA)
Ensure compliance with health, safety, environmental, and regulatory standards
Manage risk assessments, method statements, and commissioning documentation
Provide technical leadership and guidance to commissioning engineers and site teams
Liaise with client, stakeholders, and regulatory bodies throughout the commissioning process
Champion high quality delivery from the outset of design; developing processes, systems and initiatives to drive a high quality, right first\-time culture
Monitor project timelines, budgets, and resources related to commissioning activities
Provide accurate and timely project performance reports, ensuring projects are on track and contract requirements are met; sharing and celebrating success and developing improvement plans and implementing mitigation strategies as required
Lead troubleshooting, fault\-finding, and performance optimisation
- Support handover processes, including training and documentation for operations teams
Degree/equivalent in Engineering (Mechanical, Electrical, Chemical, or related discipline)
Extensive experience in commissioning within the water / wastewater sector
Strong knowledge of water treatment processes (e.g., filtration, pumping, disinfection, sludge treatment)
Proven leadership experience managing multidisciplinary teams
Experience with MEICA systems and process control (SCADA/PLC)
In\-depth understanding of health, safety, and environmental regulations
Strong project management and stakeholder engagement skills
Ability to manage multiple projects and priorities simultaneously
Desirable
Chartered Engineer status (or working towards it)
Experience on large\-scale infrastructure or utility projects
Familiarity with UK water industry standards (e.g. AMP programmes)
Knowledge of commissioning digital tools and data\-driven performance monitoring
Key Competencies
Leadership and team management
Problem\-solving and analytical thinking
Communication and stakeholder management
Attention to detail and quality assurance
Decision\-making under pressure
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About us: Costain helps to improve people’s lives with integrated, leading edge, smart infrastructure solutions across the UK’s energy, water, transportation and defence markets. We help our clients improve their business performance by increasing capacity, improving customer service, safeguarding security, enhancing resilience, decarbonising and delivering increased efficiency. Our vision is to be the UK’s leading smart infrastructure solutions company. We will achieve this by focusing on blue chip clients whose major spending plans are underpinned by strategic national needs, regulatory commitments, legislation or essential performance requirements. We offer our clients leading edge solutions that are digitally optimised through the following five services which cover the whole lifecycle of their assets: future\-shaping strategic consultancy; consultancy and advisory; digital technology solutions; asset optimisation and complex programme delivery. Our culture and values underpin everything we do.
Costain appreciate the time and effort taken when applying for one of our positions but, due to the high volume of responses, we are unable to provide individual feedback on candidates at application phase.
We do share individual feedback following an interview .
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