{"id":3468391,"url":"https://alion.io/job/galliford-try-mechanical-site-supervisor-affinity-water","title":"Mechanical Site Supervisor - Affinity Water","company":{"id":452185,"name":"Galliford Try","domain":"gallifordtry.co.uk","url":"https://alion.io/company/galliford-try","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"A","score":89,"open_postings":84,"ghost_share":0,"stale_share":0.655,"repost_share":0,"time_to_fill_p50_days":5,"computed_at":"2026-11-01T06:10:25Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Uxbridge, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":56000,"max_usd":89000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":145},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon ECS","optional":false},{"name":"Microsoft Office","optional":false},{"name":"Agile","optional":true}],"status":"live","first_seen_at":"2026-10-29T14:25:01Z","employer_posted_date":"2026-10-29","last_verified_at":"2026-11-01T10:59:14Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Note for Recruitment Agencies:\nWe prefer to hire directly and we will be in touch with our PSL Agencies if this role is eligible for release.\nWe do not accept speculative CVs from agencies. If speculative CVs are sent, no fee will be applicable - please direct all queries to the relevant Resourcing Partner.\nMechanical Supervisor - Affinity Water\nLocation - Rickmansworth\nAn opportunity has arisen for an experienced Mechanical Supervisor to join the team at Galliford Try within our Environment Business.\nIdeally, you will be based in or around the Rickmansworth area and will have the opportunity to travel across multiple sites/projects in the Region.\nYou will work on our Affinity Water Framework within our Environment Business, who are experienced in successfully delivering schemes of varying sizes, predominantly to the Water Industry, with a focus on clean water treatment and supply schemes across Affinity Water's region.\nWhat you will be doing:\nThis is a key role with input throughout the project lifecycle. As Mechanical Supervisor you will keep the site safe for everyone, including our supply chain, and deliver the mechanical installation phase of your assigned projects to a high standard. You will work closely with the Senior Project Manager / Project Managers, the Senior Mechanical Supervisor / MEICA Lead and the MEICA / Commissioning team, and make sure mechanical installation runs to programme and in a sequence that supports efficient commissioning.\nWhere appointed, you will act as Mechanical Authorised Person (MAP) under the Galliford Try Mechanical Safety Rules. This covers mechanical isolations, controlling work on mechanical systems, making sure everyone working under your control is competent and qualified for the task, and carrying out routine inspection, testing, maintenance and site safety inspections.\nYou will also act, where appointed, as Works Package Technical Specialist for mechanical packages and subcontractors. You will supervise mechanical subcontractors to a high standard of health, safety, environment and quality, review and authorise RAMS for mechanical installation works, and snag mechanical works against the relevant standards.\nYou will support the design team on the specification of mechanical systems and general design issues, and make sure all installation works meet client specifications, Asset Standards and, where relevant, WIMES. You will work with the client's Asset Operations Team to integrate new works with existing assets, and with specialist teams including DSEAR, Technical Authors and Document Controllers.\nYou will coordinate mechanical activities across Galliford Try and subcontract resources, work with the planner to keep MEICA / Commissioning updates in the main contract programme, and attend regular commissioning meetings. You will witness FATs as instructed, supervise all mechanical testing in line with the Inspection and Test Plan, and keep all records, test forms and O&M information up to date and passed to document control.\nYou will support the Commissioning team through each stage of commissioning, support operation and maintenance until plant takeover, and support the 28-day reliability test. Working with the Project Manager and Senior Mechanical Supervisor / MEICA Lead, you will manage the snagging list collaboratively, clear snags and outstanding works while contractors are still on site, and show that quality criteria are met through the performance test process.\nSafety comes first. You will put in place and maintain mechanical safe systems of work on your projects, regularly assess new risks and hazards, and make sure your team works safely and follows Galliford Try processes and procedures.\nAbout You:\nAt least 5 years' experience in the water industry\nA track record of site management and delivery of mechanical installation through to project Takeover\nExperience managing the client interface day to day, including resolving issues that affect progress\nAn understanding of water industry processes and the mechanical and electrical equipment used in the sector\nAn understanding of health, safety and environmental approaches\nGood working knowledge of Microsoft Office for creating and presenting reports\nHNC in Mechanical Engineering\nCSCS or ECS card in a relevant discipline\nEUSR National Water Hygiene Card\nSSSTS as a minimum\nDesirable:\nSMSTS\nFirst Aid at Work\nDSEAR awareness, CompEx Foundation (ExF) or equivalent\n\nWhat We Can Offer in Return:\nWith an order book of over £4.3 billion, we are one of the industry's major principal contractors, giving you the chance to work on some of the UK's most exciting projects, with stability and room to grow your skills and reach long-held career goals. You will join diverse teams working at a high professional level with exceptional levels of commitment. With a clear strategy for growth, if you're committed, talented and enthusiastic, Galliford Try is the right place for you.\nWe are committed to the physical and mental wellbeing of all our people through our 'Be Well' programme, which offers discounts on certain products, advice and support for a range of issues.\nWe invest in high-quality training for employees at every level, from apprenticeships through to senior management development. Through our Career Paths initiative, our people receive tailored training and support to fulfil their potential.\nOur industry is all about creating talented teams that excel in their areas of expertise. As an employer, we know you give your best when you feel valued and engaged.\nOur Agile Working programme gives you flexibility in when, where and how you work. Where appropriate, site and office-based employees can choose from a wide variety of working practices, offering different amounts of structure, regularity and flexibility to suit your needs and those of your wider team.\nOur benefits:\nWe put our people first, and our benefits package reflects that, with a wide range of options to support your career on top of a strong salary.\nGenerous holiday entitlement, increasing with years of service, plus the option to buy more holiday\nA wide range of corporate discounts\nCycle to Work schemes\nComprehensive pension plan\nRegular Save as You Earn share purchase scheme\nPrivate medical scheme options for all salaried employees, and an employee assistance programme offering free 24/7 support to those who need it\nPaid yearly membership to one recognised professional association relevant to your role\nAbout us:\nGalliford Try is one of the UK's major construction groups, with a vision to continuously be a people-orientated, progressive business, guided by our values to deliver lasting change for our stakeholders and the communities we work in.\nOur purpose is to improve people's lives by building the facilities and infrastructure communities need, providing opportunities for our people to learn, grow and progress, working with our supply chain to promote the best working practice, and caring for the environment in which we work.\nWe 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.\nFor more information on this role or to enquire about other positions within our Environment business, please contact Ryan De Stadler on \nAdditional Information:\nGalliford Try welcomes applications from candidates who would like to work full-time, reduced hours or flexibly, and we will discuss this in more detail during the recruitment process.\nWe'd be grateful if you could tell us about any requirements we can reasonably meet to make this application a positive experience for you.\nDon'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 match every requirement, we encourage you to apply anyway. You may be just the right candidate for this or other roles.\nAs a Disability Confident employer, we have committed to offer an interview to any candidate with a long-term health condition or disability who meets the essential criteria for the advertised position. Please contact the Resourcing Partner listed in this job advert if you believe this applies to you. 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