Overview
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. Working for Mott MacDonald Bentley, you will work on major water and wastewater schemes throughout all phases of the project from feasibility through to construction. The company’s sustained, robust performance underpins career growth. In November 2023, MMB secured its first ever framework with South West Water, serving 1.8 million customers in Cornwall, Devon, the Isles of Scilly and parts of Dorset and Somerset. The multi‑million‑pound AMP8 contract runs for five years to 2029, with potential for a further five-year extension, bringing our track record of innovative project delivery to the south‑west of England for the very first time. We are on site supporting current projects and expect to land new projects on site in 2025 as we continue to demonstrate what MMB is about.
As a Principal Mechanical Engineer, you will work on projects that make a real difference to our environment and communities by enhancing the efficiency and effectiveness of water and wastewater treatment systems. You will shape the mechanical functions throughout the lifecycle of various projects, from concept design to commissioning, ensuring that all mechanical aspects are considered and integrated.
The role
The role of a Principal Mechanical Engineer includes:
* Lead and oversee the design, planning, and execution of mechanical engineering on projects
* Provide design support and guidance for schemes ensuring designs are fit for purpose and meet current legislation and standards
* Work closely with commercial, operational and construction teams to develop efficient, practical and safe solutions throughout design, construction and beyond
* Engage with the client, managing relationships and adopting a one‑team approach to achieving client aims
* Manage interfaces and integration of the process design with other disciplines and the production of documentation
* Act as technical checker on project documents and undertake technical reviews across teams
* Identify opportunities to improve delivery processes, including development and implementation of standard designs, sustainable solutions and digital tools
* Undertake site reviews to ensure buildability and integration with existing systems
* Support the development of the mechanical engineering team, coaching and mentoring engineers and identifying the right resources for projects
What you’ll need
* Degree in Mechanical Engineering or related field
* Chartership (CEng) with a relevant Engineering Institution
* Proven ability to manage multiple projects and meet deadlines
* Experience delivering high‑quality outputs in accordance with design, quality and safety standards
* Ability to communicate effectively with team members and stakeholders
* Willingness to travel to sites across your operational region
Preferred skills
* Experience with sustainable design and green building practices
* Proficiency in mechanical engineering software and tools
* Strong understanding of regulatory requirements and industry standards in the water and wastewater sector
* Experience of temporary works design
What we can offer
At Mott MacDonald Bentley you will be offered a competitive salary commensurate with experience. Our core benefits include:
* Pension matched by employer up to 7%
* Option to purchase, sell and carry over annual leave
* Life assurance / Private Medical Insurance / Critical Illness Insurance and Health Screening options
* 26 weeks maternity leave, enhanced paternity and adoption leave / Shared parental leave
* Payment of annual professional institution subscription costs
* Gym membership discounts UK‑wide
* Cycle to work scheme, interest‑free season ticket loans and discounted dining cards
Mott MacDonald Bentley is not currently offering sponsorship to candidates on the Skilled Worker visa route in the UK. This decision reflects changes to the Skilled Worker route by the UK Government in April 2024. We welcome applications from candidates eligible for alternative immigration routes that do not require sponsorship as a Skilled Worker now or in the future.
About Mott MacDonald
Mott MacDonald is a global engineering, management and development consultancy. Our purpose is to improve society by considering social outcomes in everything we do, relentlessly focusing on excellence and digital innovation, transforming our clients’ businesses, our communities and employee opportunities. We respect each person’s differences and strive to meet their needs.
Our values are progress, respect, integrity, drive, excellence. We believe that because we care about what we do, we do things better. Our people are our most valuable asset, and we invest in them through comprehensive training and development, exposure to the wider design and build business, and ongoing opportunities. We are committed to creating a workplace where our people are safe, have a voice, can reach their full potential, and share in the rewards.
You’ll have the opportunity to contribute to projects that benefit our communities—securing water supplies for future generations and protecting homes and businesses from flood risk.
Diversity, Equity & Inclusion
We welcome applications from all sectors of the community. We are dedicated to building a diverse workplace where everyone feels included, has the opportunity to thrive, and is treated with respect. Even if you don’t meet every requirement for this role, we encourage you to apply. We provide adjustments during the application process and throughout your career, and you can read more about our Equal Opportunities Policy in our statement on equality, diversity and inclusion.
Agile working
We are committed to providing a flexible and agile working environment that supports both our employees and the needs of the business.
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