Job Description

Job Advert


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. With an annual turnover surpassing 500 million, Mott Macdonald Bentley cements its position as a leader within the industry. The sustained, robust business performance creates an ideal environment for career growth.



We have secured a new framework with D?r Cymru Welsh Water that will last up to eight years, this will see MMB tackle projects across the DCC region covering both clean and wastewater treatment sites, as well as below ground assets, reservoirs and nature-based solutions.



After securing our first framework with DCC at the beginning of AMP6, our presence in Wales has grown significantly, directly employing over 270 colleagues in the country across all roles, from frontline construction to design and management positions.



You will contribute to projects that significantly impact our environment and communities. Working primarily in the UK water market, MMB provides the feasibility, design, construction, and commissioning services needed to keep water flowing and wastewater treated.



You will play a pivotal role in shaping the process functions throughout the lifecycle of various projects. From concept design to commissioning, you will ensure that all mechanical aspects are meticulously considered and integrated.

The role of a Principal Process Engineer includes:

Lead and oversee the design, planning, and execution of process engineering on projects. Lead development of process design process deliverables such as process models, mass balances, control philosophies. Analyse site performance and identify risks that may impact project delivery. Develop mitigation to avoid negative impacts or exploit opportunities. Challenge the process selection and delivery effectiveness of initial solutions to ensure we always offer our clients the best value solutions. Identify opportunities for innovation to meet whole-life cost and net-zero drivers. Preparing and reviewing designs for schemes and ensuring all designs are fit for purpose and meet current legislation and standards. Producing and reviewing technical specifications and schedules for procurement activities, reviewing supplier tender bids and technical submissions. Possess a broad knowledge of industry standards and legislation. Be able to appropriately challenge Client specifications and present and defend solutions to complex problems. Identifying opportunities to improve delivery processes including development and implementation of standard designs, sustainable solutions, and digital tools. Acting as technical checker on project documents, and undertaking technical reviews for projects across teams. Managing the interfaces and integration of the design with that of other disciplines and production of documentation. Able to actively seek input from other engineers, specialists, client and project team members to improve understanding and deliver fit for purpose solutions. Working closely and collaboratively with the commercial, operational and construction teams to develop efficient, practical and safe solutions throughout design stages, construction and beyond. Supervising and mentoring our Graduates and Engineers assisting them to develop their knowledge and skills. Positively engage with the client, managing relationships and adopting a one-team approach to supporting them in achieving their aims. Undertaking site reviews to ensure buildability of solutions and integration within the existing systems.

What you'll need:

Chemical Engineering or relevant Process Engineering related degree, or related field Chartered member of professional institution e.g ICE, IMechE, etc, or equivalent experience Experience and understanding of water and/or wastewater unit processes and treatment plant, with experience of delivering process design for wastewater projects. Experience of HAZOP studies as chair or team member would be advantageous Experience with water, or wastewater, non-infrastructure or infrastructure projects Experience of successfully delivering high quality outputs in accordance with design, quality and safety standards Ability to communicate effectively with team members and stakeholders Methodical approach to problem solving A proactive and pragmatic approach Proficient in delivering results within short timeframes, prioritising tasks and managing your time efficiently A valid driving licence and willingness to travel to sites

What we can offer:

At Mott MacDonald Bentley you will be offered a competitive salary which is commensurate based on your 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 also available


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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