Senior Mechanical Site Manager

Kier Group; City of Westminster; On-site; GBP 65,000 - 90,000; Full time

Job summary

Kier Group in London is seeking a Senior Mechanical Site Manager to lead the installation of mechanical services on our Kier Mechanical & Electrical projects. You will be at the heart of delivery, ensuring safe, compliant, and high‑quality installations across custodial, commercial, health and science sectors.

The role requires a relevant industry qualification, CSCS and SMSTS, strong collaboration and communication skills, and a proactive, safety‑minded approach.

Qualifications

• Relevant industry accredited qualification.
• CSCS and SMSTS accreditation at minimum.
• Clear communicator who works well in a team.
• Positive, solutions‑focused and safety‑minded approach.
• Keen to learn and develop with line manager support.

Responsibilities

• Ensuring all site works are carried out safely and in line with Kier standards, project requirements, and UK law
• Overseeing the installation of mechanical services, ensuring compliance with specifications and coordinating with other trades
• Managing quality control procedures and providing accurate progress updates to the project management team
• Guiding and overseeing other supervisors to ensure successful delivery of delegated works packages
• Contributing to the identification of project risks and opportunities, taking responsibility for mitigation within your area of control

Skills

CSCS

SMSTS

Leadership

Team collaboration

Safety standards

Education

Relevant industry qualification

Job description

We're looking for Senior Mechanical Site Managers to join our Kier Mechanical & Electrical team based on site in London.

Location: London, Zone 1
Hours: Full Time, Permanent. 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 Senior Mechanical Site Manager you'll be at the heart of our project delivery, ensuring the safe and effective installation of mechanical services. Working as part of a collaborative team, you'll take the lead on mechanical installations while supporting the broader site management objectives. This is a hands‑on role where your technical expertise and leadership will directly contribute to the successful delivery of projects across various sectors including custodial, commercial, health, and science.

What will you be responsible for?

As a Senior Mechanical Site Manager you'll be working within the Kier Mechanical & Electrical team, supporting them in delivering complex and challenging projects to the highest standards. Your day to day will include:

• Ensuring all site works are carried out safely and in line with Kier standards, project requirements, and UK law
• Overseeing the installation of mechanical services, ensuring compliance with specifications and coordinating with other trades
• Managing quality control procedures and providing accurate progress updates to the project management team
• Guiding and overseeing other supervisors to ensure successful delivery of delegated works packages
• Contributing to the identification of project risks and opportunities, taking responsibility for mitigation within your area of control

What are we looking for?

This role of Senior Mechanical Site Manager is great for you if:

• You're technically confident in mechanical services installation and safety, with a relevant industry accredited qualification
• You hold CSCS and SMSTS accreditation as a minimum
• You're a natural collaborator who communicates clearly and enjoys working as part of a team
• You have a positive, solutions‑focused approach and are committed to maintaining the highest safety standards
• You're keen to continue learning and developing your career with support from your line manager

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.

Senior Site Manager (Electrical) Job description.pdf