JN Bentley
Commissioning Engineer

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Mott MacDonald Bentley
Mott MacDonald Bentley is a design and build business combining the design expertise of Mott MacDonald with the contracting experience of JN Bentley, operating across water, energy and environment sectors throughout the UK. With an annual turnover surpassing £650 million, Mott Macdonald Bentley cements its position as a leader within the industry. The sustained, robust business performance creates an ideal environment for career growth.
Engineering is at the very core of what we do. Be it civil, mechanical or electrical, our engineers are based on site and play a practical, hands-on role in the successful delivery of projects.
We secured our first contract with Severn Trent at the beginning of AMP5 in 2009. Three AMPs later and Severn Trent has grown to become our largest client in terms of turnover. We’ve laid strong roots in the area, working from offices at Shifnal in the West Midlands, but delivering work across the Severn Trent patch. 420 colleagues are based in the region, in all roles from frontline construction to commercial management, operations to design.
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I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?
Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.
Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.
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Graduate Consultant — 2026 Scheme
Why you're a good match
StrongYour economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.
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Why you're a good match
You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.
Experience fit
Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.
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The Role Of a Commissioning Engineer Includes
- Commissioning services including documentation, liaising with suppliers and facilitating contractor commissioning and assist the project team with project completions.
- Work within the team of mechanical, EICA and commissioning engineers to develop best practice, a strong health & safety environment and value for money.
- Wastewater projects incorporating new build and refurbishment on apparatus such as inlet works, course screens with screen handling units, grit separation & classifiers, fine screens, chemical dosing, dewatering & secondary treatment plant etc.
- Ability to analyse and interpret data to analyse problems and find solutions.
- Provide process and control expertise for delivery teams within UU framework.


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What You’ll Need
- Experience of installation & wastewater commissioning in the utility sector
- Experience with planning the commissioning process cradle to grave
- Working to safe systems of work including producing and reviewing third party Risk Assessments & Method Statements.
- Ability to demonstrate evidence of design improvements of process related equipment and plant.
- Full UK driving licence
What’s In It For You
Alongside our significant training and development investment, bespoke progression plan and support to achieve professional chartership, we offer a wide range of financial, lifestyle, health and wellbeing benefits that you can tailor to your needs.
To view our full range of benefits, please see the Bentley benefits brochure attached.
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