Senior Commissioning Engineer Rickmansworth, Hertfordshire, United Kingdom Posted on 10/30/2025[...]

Note for Recruitment Agencies:

We prefer to hire directly and we will be in touch with our PSL Agencies if this role is eligible for release.

We 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.

Senior Commissioning Engineer

Rickmansworth

An opportunity has arisen for a Senior Commissioning Engineer to join the team at Galliford Try within our Environment Business.

Working on the Affinity Water AMP 8 Framework, you will lead the commissioning delivery across a portfolio of projects, ensuring seamless integration of MEICA systems and processes. You’ll play a pivotal role in developing and implementing commissioning strategies, managing resources, and maintaining compliance with industry standards.

Ideally you will be based on the Hertfordshire, Buckinghamshire or London area and be willing to work across multiple sites on the Affinity Water Framework.

What you will be doing:

• Drive the successful delivery of commissioning activities for assigned projects, ensuring alignment with project scope, interfaces, and constraints.
• Develop and maintain the Project Commissioning Plan, Strategy, and associated documentation from outline design through to project award and completion.
• Work closely with the Head of Delivery, Operations Managers, and BU Head of MEICA & Commissioning to allocate competent resources.
• Collaborate with the client Asset Operations Team to ensure smooth integration with existing assets.
• Guarantee all MEICA installations meet technical requirements, client specifications, and relevant standards (including WIMES).
• Organise and oversee MEICA installation, testing, and commissioning activities, ensuring robust engagement and site testing.
• Liaise with specialist teams (DSEAR, Technical Authors, Document Controllers) to ensure clarity on deliverables and timelines.
• Coordinate training plans, including specialist supplier/subcontractor training where required.
• Maintain regular updates to commissioning programmes, hold progress meetings, and ensure alignment with the main contract schedule.
• Enforce Electrical & Mechanical safety rules and ensure all inspection and test documentation is completed accurately.
• Manage pre‑takeover requirements, clear outstanding works, and ensure all O&M documentation is handed over to the document control team.

About you:

• Proven experience commissioning complex projects within the water industry, ideally in a contracting environment.
• Strong leadership skills with the ability to manage multi‑disciplinary teams and maintain motivation over extended delivery periods.
• Excellent understanding of MEICA systems, water treatment processes, and associated plant/equipment.
• Commercial awareness and ability to assess the impact of change.
• Competent in Microsoft Office for reporting and presentations.
• Structured approach to commissioning plant, equipment, and processes.
• Industry‑recognised qualifications and experience in site management and client interface.
• Demonstrated ability to deliver MEICA & commissioning through to successful project takeover.

Essential Qualifications and Certifications:

• CSCS/ECS Card in appropriate discipline
• BS7671 (18th Edition)
• Full UK driving licence
• SSSTS

Desirable Qualifications and Certifications:

If you do not currently hold the following qualifications or certifications, we can provide support to help you achieve them.

• EUSR National Water Hygiene Card
• SMSTS
• First Aid at Work
• City & Guilds Authorised Person Module
• DSEAR awareness CompEx ExF or equivalent
• PROFIBUS Commissioning and Maintenance

What We Can Offer in Return:

With an impressive order book of over £4.1 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.

We are committed to maintaining 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.

We invest in high‑quality training for employees of all levels, from our leadership development framework to our apprenticeship programmes. Through our Career Paths initiative, individuals receive tailored training and support to fulfil their potential.

Our industry is all about creating talented teams that excel in their areas of expertise. As an employer, we know you are most motivated to give your best when you feel valued and engaged.

Our Agile Working programme empowers you with flexibility in when, where and how you work. Where appropriate, site and office‑based employees can take advantage of a wide variety of working practices, offering different amounts of structure, regularity and flexibility to suit your needs as well as those of your wider team.

Our benefits:

• Generous holiday entitlement, increasing with years of service, plus the opportunity to purchase further holidays
• A wide range of corporate discounts
• Cycle to Work schemes
• Comprehensive pension plan
• Regular Save as You Earn share purchase scheme
• Private medical scheme options are available for all salaried employees and our employee assistance programme also provides free 24/7 support to those who need it
• Paid for yearly membership to one recognised professional association relevant to your role

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.

For more information on this role or to enquire about other positions available within our business please contact

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.

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