Graduate Mechanical Engineer: Water

Before making an application, please browse all graduate opportunities available as we will only accept one application per candidate. Once you have made an application you will not be able to make changes to your selection or make a new application. The exception is if we open new vacancies in the new year.

To avoid missing out on your preferred role, we recommend applying as early as possible, as positions will close once filled.

Turn your ambition into action - apply now and shape your future with us.

Engineer the Future of Water. Empower Communities. Protect the Planet.

At Mott Mac Donald, we’re not just building infrastructure—we’re shaping the systems that deliver clean water, protect public health, and support sustainable living. As a Graduate Mechanical Engineer in our Water Division, you’ll be part of a team that’s transforming the entire water cycle—from abstraction and treatment to distribution and disposal.

You’ll work on high-profile, innovative projects, including advanced resilience schemes at some of the largest wastewater treatment works in the UK, helping protect the River Thames and surrounding communities from pollution and flooding. This is your opportunity to contribute to meaningful change, supported by a culture that values your growth, wellbeing, and ideas.

• Design with purpose:
  Contribute to mechanical designs across the full water cycle—potable water systems, wastewater treatment, and more.
• Innovate and collaborate:
  Work alongside multidisciplinary teams to deliver sustainable, forward-thinking solutions for complex challenges.
• Learn and grow:
  Gain exposure to cutting-edge technologies and engineering practices, supported by mentoring and training.
• Make an impact:
  Help deliver projects that improve lives, protect ecosystems, and respond to the climate emergency.

We are looking for committed and motivated graduates with a genuine passion and a desire to make a difference in the world. If this describes you, apply today to launch your career at Mott Mac Donald.

To be eligible for this opportunity, you will have less than 12 months’ relevant experience (excluding placements) and have a minimum of a bachelor’s degree (obtained no earlier than 2024) or expected to achieve a degree in mechanical engineering or similar discipline.

In your application, you should aim to demonstrate your genuine interest in both the opportunity and in joining Mott Mac Donald. You can do this by highlighting any relevant experience or interests – such as modules you’ve studied, previous work experience, or any research you’ve undertaken about our company, values, and projects.

We personally review every completed application form we receive as this part of our selection process is entirely human led; we do not use AI tools at this stage and kindly expect you not to either. We want you to answer each application question with authenticity so we can get to know the real you. Joining us as a graduate is your opportunity to shape your own story.

We are looking for graduates with the following strengths:

• Proactively takes initiative to complete tasks efficiently and independently.
• Communicates effectively and clearly with clients and colleagues.
• Delivers high quality written work with strong attention to detail and clarity.
• Demonstrates a structured and analytical approach to problem solving.

As we want the best people for the role, we support flexible working. Please ask us at interview stage about any flexibility you may need.

Mott Mac Donald Ltd. 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.

Our ethos is to develop, train and retain our graduates and therefore we are looking for a long‑term relationship with our graduates. For this reason, we cannot accept applications from candidates who would be working under the Graduate visa route or other time‑limited visas, (irrespective of visa duration), due to their temporary nature and the requirement for sponsorship under the Skilled Worker…