Site Manager

Site Manager

An opportunity has arisen for a Site Manager to join the team at Galliford Try within our Environment Business.

Join our AMP8 Framework Team as a Site Manager and play a key role in delivering a major upgrade at Affinity Waters Water Treatment Works. We’re constructing a new Rapid Gravity Treatment Plant alongside improvements to the existing clean water treatment site. This is an opportunity to make a real impact on essential services while working on a high-profile project.

What you’ll be doing:

• Ensure a safe working environment and compliance with H&S, CDM, and quality standards.
• Manage day-to-day site operations, supervising teams and supply chain.
• Plan, monitor, and report on progress, costs, and programme changes.
• Coordinate multiple work packages and drive value engineering solutions.
• Liaise with clients, stakeholders, and commercial teams.
• Conduct site audits, manage RAMS, permits, and safety briefings.
• Resolve technical issues and maintain strict quality control.
• Lead and develop your team, including PDRs and capability reviews.

About you:

• Committed to working safely.
• Experienced in managing multiple or large work packages.
• Skilled at reading and interpreting data, drawings, and specifications.
• Highly organised with the ability to prioritise competing workloads.
• Confident in liaising with site teams, subcontractors, designers, and clients.
• Strong knowledge of CDM 2015 and NEC contracts.
• Commercially astute and detail oriented.
• Proven leadership and delegation skills.
• Advanced problem-solving ability.

Qualifications & Certifications:

• HNC or higher in Civil or Mechanical Engineering (or equivalent).
• SMSTS, CSCS, EUSR (1 & 2), TWC.
• First Aid & Fire Marshal.
• Experience of M&E works and the Water Industry
• Proficient in Office 365 and CAD.

What We Can Offer in Return:

With an impressive order book of over £4.3 billion we are one of the industry’s leading principal contractors, affording you the opportunity to work on some of the UK’s most exciting projects offering you stability as well as the chance to stretch your capabilities and realise long held career goals. You will be joining diverse teams working at a high professional level with exceptional levels of commitment. With an ambitious strategy, we’re poised for further growth and success, so if you’re committed, talented and enthusiastic, Galliford Try is the right place for you.

About us:

Our purpose is to improve people’s lives through building the facilities and infrastructure that communities need, providing opportunities for our people to learn, grow and progress, working with our supply chain to promote the very best working practice and caring for the environment in which we work.

We do this by holding true to our values, delivering excellence for our clients and the community, being passionate about our role in providing vital services, putting integrity at the heart of our business by doing the right thing, and collaborating with our clients, supply chain and stakeholders to deliver lasting change and long-term value.

Additional Information:

Galliford Try welcomes applications from candidates who would like to work full-time, reduced hours or flexibly and this will be discussed in more detail as part of the recruitment process.

We encourage, and would be grateful if, you could confirm any requirements we can reasonably fulfil to make this application a positive experience for you.

Don’t meet every requirement of the role? Studies have shown that some people are less likely to apply for jobs unless they meet every single qualification. At Galliford Try, we are committed to building a diverse, inclusive and authentic workplace, so if you’re excited about this role but your past experience doesn’t align perfectly with every requirement of the role, we encourage you to apply anyway. You may be just the right candidate for this or other roles.

As a Disability Confident employer, we have committed to offer an interview to any candidate with a long-term health condition or disability that meet the essential criteria for the advertised position. Please contact the Resourcing Partner listed within the job advert if you believe this applies to you. We will also take the opportunity to discuss any adjustments required for your interview.

For more information on this role or to enquire about other positions available within our business please contact ryan.destadler@gallifordtry.co.uk

Job Info

• Job Identification 2598
• Job Category Construction
• Posting Date 09/23/2026, 10:18 AM
• Job Schedule Full time
• Job Shift Day
• Locations Egham WTW - Galliford Try Compound, Staines, TW18 3BX, GB Galliford Try Office,, Rickmansworth,, WD3 1LB, GB