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Mott MacDonald

Project Design Engineer - Mechanical

Exeter
Posted 22 days ago
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Project Design Engineer - Mechanical

Project Design Engineer – Mechanical (Permanent, Exeter)

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.

About the Opportunity

In November 2023, MMB secured its first-ever framework with South West Water, the company responsible for water and wastewater services to 1.8 million customers across Cornwall, Devon, the Isles of Scilly, and parts of Dorset and Somerset. This £multi-million-pound AMP8 contract, running for five years to 2029 (with potential renewal), marks MMB’s inaugural entry in the South West. We are now bringing our track record of innovative project delivery to the region, with opportunities to shape new projects as we demonstrate our capabilities to both the client and the broader market.

This role combines elements of Project Management and Design Engineering, managing projects across the outline to detailed design lifecycle while collaborating with a multi-disciplinary team. Our unique work environment enables you to accelerate your professional development, whether pursuing chartership or expanding your cross-disciplinary expertise.

Key Responsibilities & Responsibilities:

Project management and design leadership:

  • Work within a "project triangle" (Site Manager + Quantity Surveyor) to ensure alignment between technical, constructability, and commercial considerations
  • Oversee the design of water and wastewater infrastructure projects, from initial concept through construction, commissioning, and handover
  • Coordinate across civil, electrical, mechanical, and process design, BIM modelers, and technical specialists
  • Ensure timely completion, budget adherence, and quality according to project frameworks and industry standards

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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?

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Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your 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.

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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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Design & mentorship:

  • Lead design activities in your mechanical discipline
  • Support and mentor less experienced colleagues
  • Stimulate innovation and value-led solutions

Stakeholder engagement:

  • Develop positive partnerships with client project teams, technical assurance specialists, and operational stakeholders
  • Cultivate a "one-team" approach

What We’re Looking For

  • Accredited degree in Mechanical Engineering
  • Incorporated Membership of an engineering institution
  • Significant experience in outline and detailed design of water or wastewater projects
  • Familiarity with CDM 2015 duties (Commercial and Design Managers)

What Comes With This Role

Careers & Leadership:

  • Support us via tailored developing schemes that accelerate your path to full chartered status (IEA/CEng)
  • Mentorship, on-the-job hands-on experience, and professional training tailored to your growth

Rewards:

  • UK employer contributions up to +£7% of salary+ salary contributions (dependent on your salary band)
  • Annual bonuses to recognize both individual and collective business success
  • Funding for sector-specific professional subscriptions

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Flexibility & Benefits:

  • Minimum 33 days’ holiday (inclusive of public holidays), adjustable through benefits flex system
  • Life assurance, private medical insurance, critical illness insurance, and health screening options available
  • Flexible working models, including hybrid (home, office, site)
  • Enhanced family/leaves (26 weeks paid for maternity/adoption, 2 weeks for paternity/partners)
  • Guaranteed 2 days paid carer leave for colleagues with significant caring responsibilities

Community & Belonging:

  • An employer commitment to DE&I, with access to Advanced Employee Networks (LGBTQ+, gender, race, disability, parent/carer groups, etc.)
  • A global consultancy with heart: projects that improve lives by securing water infrastructure, flood defence, and community welfare

Location: Exeter, United Kingdom Contract: Permanent Interest: Full-time

Contact: For queries, contact Emily Naylor at emily.naylor@jnbentley.co.uk or visit our web for further diversity inclusion details.


Note: Internal applicants are welcome. Current visas impacting sponsorships:

  • No Skilled Worker visa sponsorship stories currently available under the rules in place since April 2024 (other routes welcome).
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Skills

Mechanical Engineering
Project Management
Design Engineering
Water Projects
Wastewater Projects
CDM 2015 Knowledge
Team Coordination
Mentoring
Client Relationship Management
BIM Modeling
Technical Assurance
Constructability
Budget Management
Quality Assurance
Infrastructure Design
Treatment Design

Location

Exeter, England, United Kingdom

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