Assistant Site Manager (London)

Kier Group
London

We're looking for an Assistant Site Manager to join our Building Solutions team based in Rainham, Essex .

Location: Rainham, Essex
Hours: Full time - 40 hours per week

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

This is an exciting opportunity to support the delivery of construction projects safely, on time, and to the highest quality standards. As an Assistant Site Manager, you'll work closely with the Site Manager to coordinate resources, implement project plans, and help create positive outcomes for our customers. You'll play a key role in ensuring every aspect of the project runs smoothly while contributing to a collaborative and supportive team environment.

What will you be responsible for?

As an Assistant Site Manager, you'll be working within the Construction team, supporting them in delivering projects that make a real difference. Your day to day will include:

  • Supporting the Site Manager in managing people and resources to deliver project plans safely and efficiently
  • Building and maintaining positive relationships with customers, contractors, subcontractors, and suppliers
  • Ensuring compliance with health and safety policies, procedures, and all legal requirements
  • Helping to motivate and manage the site team to achieve project objectives
  • Supporting the delivery of projects on time, to quality standards, and within budget

What are we looking for?

This role of Assistant Site Manager is great for you if:

  • You hold a CSCS card and SMSTS qualification
  • You have demonstrable experience working on construction projects
  • You're working towards or hold membership of a professional body
  • You communicate clearly and build supportive relationships with colleagues and stakeholders
  • You're committed to safety, quality, and continuous improvement in everything you do

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.

Due to the nature of this role, you will also be required to complete an Enhanced Disclosure and Barring Service Check (applicants with convictions will be treated on a case-by-case basis. We do not discriminate based on an applicant's conviction history or the details of any convictions disclosed to us). Some roles may also be subject to further pre-employment checks.

We look forward to seeing your application to #joinkier.

Posted 2026-11-01

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