Location
Windermere, Cumbria, United Kingdom (Site based at Glebe Road and/or Hawkshead near Windermere)

Hours
Full Time

Salary
£1,000,000 per year

About the Role
Costain has secured extensive work across the water sector to support the AMP 8 investment cycle. As one of seven partners appointed by United Utilities to the Enterprise, we will deliver £5.5bn of projects during AMP8 (2025–2030) and AMP9 (2030–2035). Our scope includes project management, design, construction, and commissioning services on design and build schemes throughout the North West and Cumbria region.

The Senior Site Agent will support delivery of projects ranging from £12m to £150m in value during this initial phase. You will work across the full project lifecycle from concept, early contractor involvement (ECI), delivery, through to handover. Leading the design and delivery team, you will engage with site operational teams and supply chain partners across one or multiple sites.

Your responsibilities will include developing construction strategies and programmes, ensuring projects are set up and delivered safely, to quality, on time, and within budget. This role is site based and requires strong leadership to drive successful project outcomes.

At Costain, we value diverse perspectives and encourage applicants who are passionate about making a positive impact, even if you do not meet every requirement. Your unique skills and experiences could be exactly what we need.

Experience
- Package management experience for packages over £1m, preferably managing multiple packages concurrently or a single large value package
- On-site delivery experience, managing supply chain partners and your own team
- Collaboration with wider disciplines to support safe delivery
- Familiarity with NEC contract forms
- Good communication and interpersonal skills
- Relevant CSCS card
- Willingness to work across multiple sites throughout the North West

About you
Proactive leader with strong organisational skills and the ability to create a positive working culture focused on safety, efficiency, and high-quality delivery. Adaptable to change and committed to achieving zero Lost Time Injuries (LTI) and RIDDOR incidents. Able to report consistently and reliably on project performance and risks, working collaboratively to mitigate issues.

Qualifications
- HNC/HND or degree in a relevant engineering discipline
- SMSTS minimum
- CSCS card aligned to role
- Recognised engineering or site management qualifications
- IOSH or similar safety certification