Mechanical Engineer

Internal applicants are welcome.

Mott Mac Donald Bentley is a fully integrated design and build business combining the design expertise of Mott Mac Donald with the contracting experience of JN Bentley to deliver award‑winning projects.

As a Mechanical Engineer you will contribute to projects that significantly impact our environment and communities. Working primarily in the UK water market, you will help keep water flowing and wastewater treated, enhancing the efficiency and effectiveness of water and wastewater treatment systems.

• Develop the mechanical design of water and wastewater infrastructure and non‑infrastructure projects through outline and detailed design, construction, commissioning, and handover, including P&IDs, valve schedules, pump calculations, safe access and lifting arrangements, above‑ground pipework layouts, etc.
• Coordinate with the project team comprising of Electrical, Civil, Geotech and Process designers to ensure designs are completed on programme, within budget, and to the quality defined by framework specifications.
• Work closely and collaboratively with the commercial, operational and construction teams to develop efficient, practical and safe solutions throughout design stages, construction and beyond.
• Positively engage with the client, managing relationships and adopting a one‑team approach to supporting them in achieving their aims.

• Degree in Mechanical Engineering or a related field.
• Working towards IEng or CEng with a relevant Engineering Institution.
• Ability to communicate effectively with team members and stakeholders.
• Methodical approach to problem solving.
• A valid driving licence and willingness to travel to sites across your operational region.

We are not currently offering sponsorship to candidates under the Skilled Worker visa route in the UK. We continue to welcome applications from candidates who are eligible for alternative immigration routes that do not require sponsorship.

• MMB matches employee pension contributions between 4.5% and 7%.
• Annual bonus schemes are part of our independent business earnings.
• Payment of annual professional institution subscription costs.

• 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.
• Flexible working arrangements to support responsibilities beyond the workplace.
• Access to a range of employee networks supporting diversity, gender, race, ethnicity, disability, and parent/carer communities.

• 26 weeks paid maternity and adoption leave, two weeks paid paternity/partner leave and an option for shared parental leave.
• Up to two paid additional days leave for those with significant caring responsibilities.

• Structured development schemes supporting the journey toward professional chartership.
• Fast‑tracked chartership reviews, mentorship, hands‑on experience and tailored training opportunities.

We welcome applications from all sectors of the community and are dedicated to building a diverse workplace where everyone feels included, has the opportunity to thrive, and is treated with respect.

We are committed to ensuring that our recruitment practices are barrier‑free and as inclusive as possible. This includes making adjustments during the job application process and throughout your future career with us. Please call 01756 691572 or email  to discuss any such adjustments that we can make.