JN Bentley
Project Design Engineer - Mechanical

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Mott MacDonald Bentley
Mott MacDonald Bentley is a fully integrated design and build business combining the design expertise of Mott MacDonald with the contracting experience of JN Bentley to deliver award-winning projects.
MMB has been working with Yorkshire Water since MMB's creation in 1999, delivering a huge variety of projects - from restoring and upgrading picturesque reservoirs, to installing the latest technology to provide clean drinking water or treat sewerage to protect rivers - we've done it all. We have several frameworks with Yorkshire Water and remain a delivery partner into AMP8, keeping our team of over 300 people busy for years to come.
The Project Design Engineer - Mechanical Role
The Project Design Engineer - Mechanical role combines elements of both traditional Project Management and Design Engineering, managing projects through the outline and detailed design lifecycle, supported by our multi-disciplinary teams. Our unique work environment means you can thrive personally and professionally, accelerating your journey to chartership or developing your cross-discipline expertise. Please follow the link to our Mott MacDonald Bentley YouTube to find out more about the role of a Project Leader - Project Leader campaign - YouTube.
What You’ll Be Doing:
- Be part of a unique and dynamic Design-and-Build environment
- Project manage the design of water and wastewater projects
- Fast track your Chartership and attain a clear route for career progression
- Be a member of a multi-disciplinary project team, supporting both your, and the team's personal and professional development
- Have the flexibility of working from home, office, and site
- Have the opportunity to see your designs brought to life
Reasons to use Rodeo
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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Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
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.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Day-to-Day Responsibilities:
- Working as part of a “project triangle” alongside a Site Manager and Quantity Surveyor to ensure that technical, constructability, and commercial aspects of project delivery are considered throughout.
- Leading the design of treatment or infrastructure projects from the initial outline to detailed design, through construction, commissioning, and handover.
- Coordinating the project team including civil, electrical, mechanical, and process designers, BIM modelers, and technical specialists, and ensuring designs are completed on programme, within budget, and to the quality defined by each framework and industry specifications.
- Undertaking design in your own discipline and mentoring less experienced colleagues where appropriate.
- Building positive relationships with the clients’ project, operational, and technical assurance teams and promoting a "one-team" approach.
Requirements:
- Accredited Degree in Mechanical Engineering.
- Incorporated Member of Engineering Institution.
- Outline and detailed design experience of water or wastewater projects.
- Knowledge of the Designer or Principal Designer duties under CDM 2015.
Benefits:
Financial Wellbeing
- MMB match employee pension contributions between 4.5% and 7%.
- As an independently owned business, we share the financial success of the business with all our colleagues, including our annual bonus schemes.
- Payment of annual professional institution subscription costs.
Health and Wellbeing
- A minimum of 33 days holiday each year, inclusive of public holidays, with the ability to buy, sell, or carry over annual leave through our flexible benefits programme.
- Access to Life Assurance, Private Medical Insurance, Critical Illness Insurance, and Health Screening options.
- We are happy to talk openly about flexible working and how we can support your responsibilities beyond the workplace.
- Join a wide range of groups, including our Advanced Employee Networks which support our LGBTQ+, gender, race and ethnicity, disability, and parents/carers communities.


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Enhanced Family and Carers Leave
- Enhanced family leave policies, including 26 weeks paid maternity and adoption leave, and two weeks paid paternity/partner leave plus the option for shared parental leave.
- Up to 2 paid additional days leave are provided for those with significant caring responsibilities.
Learning and Development
- MMB are committed to empowering our people to grow professionally and thrive in their careers. We offer structured development schemes that support your journey toward professional chartership. From day one, employees are fast-tracked towards chartership reviews and benefit from mentorship, hands-on experience, and tailored training opportunities.
Sponsorship
Mott MacDonald Bentley are not currently offering sponsorship to candidates under the Skilled Worker visa route in the UK. This decision is as a consequence of the changes made to the Skilled Worker route by the UK Government in April 2024. We continue to welcome applications from candidates who are eligible for alternative immigration routes in the UK, that do not require sponsorship as a Skilled Worker now or in future.
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