Sub-Agent (Isleworth)

Kier Group
Isleworth, Greater London

We're looking for two Sub-Agents to join our Thames Water Framework team based in Kingston upon Thames and Twickenham.

Location: Kingston upon Thames and Twickenham
Hours: 45 hours per week - some flexibility on hours available if desired, just let us know when you speak to us.

We are unable to offer certificates of sponsorship to any candidates in this role.

As a Sub-Agent, you'll play a vital role in delivering civil and structural works at Hogsmill STW or Mogden STW. Working closely with the Agent, you'll help manage operational resources, ensuring projects are delivered safely, on time, and to the highest quality standards. This is an opportunity to make a real impact whilst supporting a collaborative team environment.

What will you be responsible for?

As a Sub-Agent, you'll be working within the operational delivery team, supporting them in achieving project excellence and customer satisfaction. Your day to day will include:

  • Implementing and monitoring health and safety policies to ensure compliance and create a safe working environment
  • Coordinating labour, plant, materials and subcontractors to deliver works on programme and to specification
  • Managing site engineers and quality assurance processes, ensuring accurate reporting and documentation
  • Supporting commercial activities including cost forecasting and identifying opportunities for improvement
  • Building strong relationships across teams to promote collaboration and deliver shared objectives

What are we looking for?

This role of Sub-Agent is great for you if:

  • You hold a relevant qualification (HNC, degree, NVQ Level 3 or management qualification) and are chartered with ICE or working towards chartership
  • You have a proven track record in successfully managing projects with strong organisational and communication skills
  • You're commercially aware with excellent problem-solving abilities and a proactive approach to work
  • You hold SMSTS and CSCS or CPCS cards and have strong attention to detail
  • You're an enthusiastic team player who enjoys collaborating with others to achieve results

We're all about finding potential here at Kier, and transferrable skills are always welcome! So, even if you don't tick every box, please apply and we can have a chat.

Rewards and benefits

We're proud to be able to offer our brilliant people a wide variety of benefits that you can tailor to your needs. You can see more information of benefits here .

Diversity and inclusion

Making Kier a diverse and inclusive place to work is a huge priority for us. We're proud of the steps we've taken so far, but we know we must always do more. Our employees are key in shaping Kier's diversity and inclusion initiatives and our people have made a huge impact on how we work, by using their experiences to shape our policies. You can see our D&I action plan here .

As a Disability Confident employer, we will ensure that a fair and proportionate number of disabled applicants that meet the minimum criteria for this role will be offered an interview.

We look forward to seeing your application to #joinkier #LI-CH1.

Posted 2026-05-18

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