Commissioning Engineer Apprentice - Level 6

Apprentice Commissioning Engineer – Level 6

Infrastructure (Water)

Start your career where it matters most – building a better future together

Tilbury Douglas is a leading UK building, infrastructure, engineering and fit‑out company. Within Tilbury Douglas Infrastructure, we deliver essential water and wastewater projects that protect the environment, support communities and ensure the safe treatment and distribution of water across the UK.

As an Apprentice Commissioning Engineer (Water), you’ll support the safe testing, commissioning and handover of new and upgraded water infrastructure assets. You’ll gain hands‑on experience across live projects while developing the technical knowledge and skills needed for a long‑term career in commissioning and engineering within the water sector.

Location

This role will be based in the South West region, working within our Infrastructure – Water teams. You’ll be predominantly site‑based across water and wastewater treatment works, pumping stations and network projects, with travel across the region as required.

As an Apprentice Commissioning Engineer, you’ll combine on‑the‑job learning with formal academic study, developing the skills required to become a qualified commissioning engineer.

You will study towards a Level 6 Electro‑Mechanical Engineering Degree Apprenticeship gaining a BEng (Hons) or BSc (Hons) degree.

With the support of experienced commissioning engineers and project teams, you’ll:

• Support commissioning activities on water and wastewater projects, including pumping stations, treatment works, tanks and pipelines
• Assist with testing and commissioning of mechanical, electrical and ICA systems
• Learn how commissioning plans, procedures and programmes are developed and followed
• Support inspections, functional testing and performance checks to ensure assets meet design and regulatory requirements
• Assist with fault finding and resolution during commissioning activities
• Learn how health, safety and environmental requirements are applied during commissioning works
• Support the preparation of commissioning documentation, test records and handover information
• Work alongside site, design, construction and operational teams to ensure smooth transition from construction to operational use
• Develop an understanding of water industry standards, permits and regulatory processes

This apprenticeship provides a unique entry route into the water commissioning discipline, combining real project experience with a recognised engineering degree. You’ll be supported through structured training, mentoring and professional development, giving you a strong foundation to progress into an Assistant Commissioning Engineer role within Tilbury Douglas Infrastructure upon completion.

We’re looking for people who are curious, safety‑focused and keen to build a career in engineering and commissioning within the water sector. You’ll bring:

• A Level 3 apprenticeship, T Level, A Levels or BTEC qualification
• Maths grade 5–9 or B–A* (science, engineering or technical subjects desirable)
• A genuine interest in engineering, commissioning and water or wastewater infrastructure
• Strong problem‑solving and analytical skills
• Good communication skills and the confidence to work with a wide range of people
• A proactive, methodical approach with a willingness to learn and take responsibility
• A full UK driving licence (or working towards one by the time you start)

Previous site, engineering or water industry experience is desirable but not essential.

• A structured Level 6 engineering degree apprenticeship combining work‑based learning and formal study
• Mentoring and support from experienced commissioning and engineering professionals
• A competitive apprentice salary with progression as you develop
• 26 days annual leave plus bank holidays
• Two days’ volunteering opportunities per year
• Opportunities to work on long‑term water and wastewater frameworks
• An inclusive culture where your ideas and contributions are valued