Mott MacDonald
Mechanical Engineer
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Mechanical Engineer – Mott MacDonald Bentley
Internal applicants are welcome.
We are a fully integrated design and build business, combining the design expertise of Mott MacDonald with the contracting experience of JN Bentley. With an annual turnover exceeding £500 million, we lead the industry, creating an ideal environment for career growth.
About the Opportunity
We’ve been named a partner on a new AMS8 framework with United Utilities, extending our relationship for at least the next five years. This partnership involves managing over £3 billion of North West England infrastructure projects—including upgrades to wastewater treatment works, reducing storm overflows, and implementing the largest spill reduction programme in the UK, protecting over 500km of rivers and bathing waters.
As a Mechanical Engineer, your role will shape critical mechanical functions across project lifecycles—from feasibility, design, construction, and commissioning—to enhance water and wastewater treatment efficiency.
Your key contributions:
- Design and optimise water/wastewater infrastructure, from outline design to construction and commissioning.
- Develop P&IDs, valve schedules, pump calculations, access planning, and pipework layouts.
- Collaborate with Electrical, Civil, Geotech, and Process teams to deliver designs on Programme, within budget, and to quality standards.
- Work closely with commerical, operational, and construction teams to ensure safe, practical, and efficient solutions.
- Foster strong client relationships, adopting a one-team collaboration approach.
Work location:
- Primarily UK-based, with travel to project sites across operational regions.
Responsibilities
- Develop mechanical designs for water/wastewater infrastructure (including P&IDs, safety access, lifting arrangements, and above-ground pipework).
- Support outlines to detailed design, construction, commissioning, and handover, ensuring compliance with AMS8 framework specifications.
- Coordinate with cross-functional teams (Electrical, Civil, Geotech) to align designs with project objectives.
- Work with commercial and operational teams to refine solutions during design, construction, and post-handover phases.
- Manage client relationships, ensuring alignment with project goals through transparent stakeholder engagement.
- Work toward IEng or CEng registration with a relevant engineering institution.
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Requirements
- Degree in Mechanical Engineering (or a related field).
- Commitment to progressing toward IEng (Incorporated Engineer) or CEng (Chartered Engineer) status.
- Strong problem-solving skills with a methodical, detail-oriented approach.
- Excellent communication skills, both technical and stakeholder management.
- A valid UK driving licence and willingness to travel frequently for site visits.
Benefits Package
Financial & Professional Growth
- Pension matching: MMB matches employee contributions between 4.5%–7%.
- Annual bonus schemes (Linked to business financial success).
- Full payment of professional institution subscription costs (e.g., IEng/CEng registration fees).
Health & Wellbeing
- 33 days of paid holiday annually (plus public holidays and flexibility to buy, sell, or carry over leave).
- Access to Life Assurance, Private Medical Insurance, Critical Illness Cover, and Health Screenings.
- Support for adaptive working arrangements and flexible working discussions.
Family & Carer Support
- Enhanced parental leave:
- 26 weeks’ paid maternity/adoption leave.
- 2 weeks’ paid paternity/partner leave + shared parental leave options.
- 2 paid additional days for significant caring responsibilities.
Learning & Development
- Rapid access to chartered review paths in your first year.
- Access to mentorship, hands-on training, and tailored programs for career acceleration.
- Exposure to diverse projects across design and build sectors.
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Note: We are not currently offering Skilled Worker visa sponsorship due to recent UK Government changes. Applications from eligible visa routes (other than Skilled Worker) are welcome.
About Mott MacDonald Bentley
We are a joint venture between Mott MacDonald (global consultancy) and JN Bentley (contracting specialists), specialised in integrated design and build services.
As a global engineering and management consultancy, Mott MacDonald’s purpose is to "improve society through social outcomes, digital innovation, and excellence". Our core values are progress, respect, integrity, drive, and excellence.
We prioritise workforce development and are committed to:
- Safe, inclusive workplaces where employees reach their potential.
- Fair compensation systems, including shared rewards.
- Long-term career investment—offering training, mentor, and growth acceleration.
Our projects have a direct impact on water security, flood protection, and wellbeing—fostering a society where engineers can make a real difference.
Diversity, Equity & Inclusion
At Mott MacDonald Bentley, we celebrate a diverse workforce. If you don’t meet all criteria but are passionate about this role, we encourage you to apply—approach, ability, and commitment matter more.
- We are dedicated to removing recruitment barriers and provide adjustments where needed:
- Contact recruitment@jnbentley.co.uk or call 01756 691572 for support.
- Review our equality policy: Diversity and Inclusion Policy.
Flexible & Agile Working
We support a growing workforce with flexible schedules that align with business needs.
#LI-MMB (LinkedIn post screening ensured.)
Apply now for a role where your technical and interpersonal skills will shape transformative infrastructure projects—impacting millions!
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