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Senior Site Agent

Job in Reading, Berkshire, RG1, England, UK
Listing for: Tilbury Douglas
Full Time position
Listed on 2026-10-21
Job specializations:
  • Construction
    Civil Engineering, Site Manager
Salary/Wage Range or Industry Benchmark: 65000 - 90000 GBP Yearly GBP 65000.00 90000.00 YEAR
Job Description & How to Apply Below
The Opportunity

Location:

Thames Valley / Oxfordshire

We are looking to appoint an experienced Senior Site Agent to join our Infrastructure team, supporting the delivery of water and wastewater projects as part of our growing AMP8 programme.

This is an exciting opportunity to take a leading role in delivering projects ranging from £2m to £15m, including civil, mechanical, electrical and ICA works across live operational treatment sites.

You will be responsible for overseeing site operations, ensuring projects are delivered safely, efficiently and to the highest standards of quality. Working closely with project managers, engineers, subcontractors and clients, you will play a key role in coordinating site activities, driving performance and ensuring successful project delivery.

Key Duties
  • Lead and manage day-to-day site operations, coordinating multidisciplinary teams, subcontractors and direct labour to deliver projects safely, on programme and within budget.
  • Oversee construction activities across civil, mechanical, electrical and ICA disciplines, ensuring compliance with drawings, specifications and quality standards.
  • Champion health, safety and environmental standards, ensuring compliance with CDM Regulations, company procedures and safe working practices on live operational sites.
  • Manage short-term programmes, monitor progress, identify risks and implement solutions to maintain project performance and minimise disruption to operational treatment works.
  • Build strong relationships with clients and stakeholders, supporting commercial management, project reporting and continuous improvement initiatives.
About You

You will be an experienced construction professional with strong operational leadership skills and a proven track record of delivering complex infrastructure projects within a main contractor environment.

You will bring experience in managing multidisciplinary site teams, subcontractors and construction activities, ideally within the water or wastewater sector.

Strong technical knowledge, commercial awareness and programme management skills are essential, alongside the ability to communicate effectively and build positive relationships with clients and project teams.

An HNC or equivalent qualification in Civil Engineering, Mechanical Engineering, Construction Management or a related discipline is required, alongside SMSTS and a relevant CSCS card. Professional membership and experience using Dalux would be advantageous.

What we can offer you
  • Competitive salary
  • Car Allowance
  • 26 days annual leave (with the opportunity to buy or sell up to 3 days holiday)
  • 3 additional long service days achieved after 3, 7 and 10 years
  • Private medical insurance for yourself (with the option to buy family cover)
  • Life Assurance
  • Defined contribution pension scheme matched up to 8%
  • Enhanced maternity, paternity and parental leave
  • 2 days volunteering opportunities
  • Flexible and Agile working (dependent on your role)
  • Employee Assistance Programme
  • Professional membership fees
  • Perks at Work Employee discount scheme offering discounts on a range of categories such as electronics, home appliances, food & groceries, car buying, travel, fitness and more
  • Flexible Benefits scheme which includes the opportunity to purchase benefits such as:
    • Critical illness insurance (with option to purchase for your partner)
    • Dental Insurance
    • Travel insurance
    • Cycle to work scheme
    • Retail vouchers/payroll giving/activity pass for top leisure attractions.
Who we are

Tilbury Douglas is a leading UK building, infrastructure, engineering and fit-out company, delivering vital projects across sectors including health, education, highways, justice, defence, aviation, water, and environment.

Our people are at the heart of our success. We are committed to an inclusive culture that encourages innovation and celebrates individual differences. We are proud to hold Investors in Diversity status.

Please note:

we do not hold a sponsorship licence. This role is subject to Baseline Personnel Security Standard (BPSS) clearance.

Position Requirements
10+ Years work experience
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