2027 UK Graduate Wastewater Network Modeller Career Path

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.

 

 

Application process

 

• Online strengths-based assessment
• Application form

 

CVs and cover letters are not required as part of the application process. Candidates will be assessed through a single-stage strengths-based interview.

 

Start your career with a global, employee-owned consultancy where your work can make a real difference. At Mott MacDonald, you'll work alongside experts, contribute to meaningful projects, and have the support, learning opportunities, and experience needed to grow your career from day one.

 

 

Job Description

 

Engineer a Better Tomorrow – For People, Planet, and Progress 

 

At Mott MacDonald, we’re more than just an engineering, management, and development consultancy—we’re a purpose-driven community of passionate individuals committed to shaping a better future. As a wholly employee-owned business, we choose our own direction and focus on what truly matters: delivering meaningful outcomes for our clients, empowering our people, and making a positive impact in the communities where we live and work.

 

We work across incredible global industries, delivering exciting work that is defining our future and making an important societal impact. It’s our people who power that performance—we succeed when they do. 

 

About the Role

 

We’re currently looking for a Graduate Wastewater Network Modeller to join our Water Utilities Division, a centre of excellence that supports colleagues across our global business. You’ll be part of a team tackling some of the most pressing challenges of our time—climate change, ageing infrastructure, pollution incidents, Combined Sewer Overflow (CSO) spills, and population growth—by designing resilient wastewater networks and delivering major pipeline transfers and drainage systems that protect communities and the environment. 

 

This role offers a fantastic opportunity to grow your technical and project management skills through diverse and impactful project work. You’ll be supported by senior and principal modellers and collaborate across our UK-wide modelling team, gaining exposure to national and international water frameworks. 

 

What You’ll Be Doing

 

• Build and calibrate 1D and 2D hydraulic models 

• Assess and influence CSO activity and operation to meet sector targets 

• Evaluate foul water flooding and wastewater network resilience 

• Develop mitigation solutions and present options to clients 

• Work with industry-standard modelling software, GIS, and coding tools 

• Produce high-quality reports and visualisations 

• Collaborate with multidisciplinary teams across the business 

 

Explore More 
Discover how we’re transforming water networks: 
Wastewater networks - Mott MacDonald 

 

 

Candidate Specification

 

At Mott MacDonald, we’re looking for curious, motivated graduates who want to make a real difference.  Join our purpose-driven teams where your ideas matter, your growth is supported, and your work enhances the world we live in. 

 

To be eligible for this opportunity, you will have less than 12 months’ relevant experience (excluding placements) and have a degree (obtained no earlier than 2025) or expected to achieve one of the following degree disciplines:  

 

• Geography 

• Hydrology and Water Management 

• Water and Environmental Engineering 

• Environmental Science 

• Civil Engineering 

• Mathematics 

 

In your application, you should aim to demonstrate your genuine interest in both the opportunity and in joining Mott MacDonald. 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 ask 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:

 

• Methodical approach to problem solving 

• Ability to use your initiative to undertake tasks efficiently and independently. 

• Excellent verbal communication skills, which allow you to confidently liaise with clients and team members. 

• Excellent written communication and attention to detail and be able to demonstrate accurate technical drawings and good report writing. 

 

 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. 

 

 

UK Immigration

Mott MacDonald 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 route in future. 

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. 

 

AI Usage

At Mott MacDonald, we see the value AI can bring, but we take a people-first approach to hiring. While AI tools can help candidates prepare and build confidence, every application and hiring decision is reviewed by our recruitment and hiring teams. We encourage the responsible use of AI while ensuring we get to know the real person behind the application.

 

Accessibility

We want you to feel supported and able to perform at your best throughout our recruitment process. If there is anything we can do to make applying or interviewing with us more accessible, please contact us