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Senior Agent

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Onsite

Senior Agent

Costain

Senior Agent

Skills

Supply Chain

18 days ago

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Important information


Contract type:

Permanent, Freelance / Contract

Location:

Windermere LA23, UK

Work mode:

Onsite

Published on:

7 October 2026

What they need


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 Site Agent will support the delivery of projects allocated to Costain and ranging in value from £12m - £150m in this first wave. You will work across the project lifecycle from concept, ECI, delivery and through handover and will be leading our design and delivery team in engagement with site operational teams and supply chain partners (on one or multiple sites). You will be developing our construction strategies and programmes and ensuring we are setting up and delivering safely, to quality, time and budget

The role will be site based, at Glebe Road and/or Hawkshead near Windermere, Cumbria

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-KP1

  • Responsibilities: Responsibilities

    Collaborate with the wider team to develop robust plans and forecasts for delivery aligned to the requirements of the Costain Way and Enterprise processes
    Lead on the development of the delivery strategies and programme, budget development and delivery of work packages; ensuring robust scope challenge throughout whilst ensuring we meet the requirements
    Lead in the development of collaborative relationships with site operations teams, our supply chain and site delivery teams for effective delivery of your allocated site/s
    Create and lead a positive working culture to promote safe, efficient and high-quality delivery adapting plans to accommodate changes or improvements
    Support the drive to achieve zero LTI and RIDDOR incidents
    Ensure consistent and reliable reporting of project/services performance into the Framework

    Report key project and programme risks and work with the wider team to mitigate or manage effectively

    Knowledge, Skills, and Experience

    Essential

    Package management experience for packages over £1m (preferably multiple packages concurrently or a single large value package)

    Experience of on site delivery, managing supply chain partners, your own team and collaborating with wider disciplines to support safe delivery

    Familiarity and experience of delivery to NEC contract forms

    Good communication and interpersonal skills

    Relevant CSCS card

    Willingness to work across multiple sites throughout the North West

Qualifications: Essential

HNC/HND or degree in a relevant engineering discipline
SMSTS minimum
CSCS card aligned to role
Recongised engineering / site management qualifications

  • IOSH or similar safety certification

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 .

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:
https://www.gov.uk/government/collections/disability-confident-campaign

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