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Mott MacDonald

2027 UK Graduate Mathematical Modeller Career Path: Water

Cambridge
Posted 3 days ago
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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.

Job Description

Model the Future. Solve Complex Challenges. Deliver Lasting Impact. 

At Mott MacDonald, we believe in using data, science, and innovation to protect our environment and improve lives. As a Graduate Mathematical Modeller, you’ll be part of a dynamic team tackling some of the most pressing global challenges—from climate change and water scarcity to pollution and flood risk.

You’ll work alongside leading experts in flood risk, water resources, and environmental engineering, applying advanced modelling techniques to support strategic decisions and sustainable infrastructure. Whether it’s preventing sewage spills, designing nature-based solutions, or minimising the carbon footprint of flood defences, your work will bring tangible benefits to communities and ecosystems around the world. 

What You’ll Be Doing

You’ll contribute to multidisciplinary projects across the UK and internationally, using cutting-edge tools and techniques. Your responsibilities may include:

  • Hydrodynamic & water quality modelling: Use industry-standard packages (e.g. TUFLOW, Flood Modeller Pro, HEC-RAS, ICM, Delft 3D) and CFD software (e.g. ANSYS Fluent, Flow-3D) to simulate environmental systems. 
  • Data analysis & insight: Analyse large datasets to uncover patterns, inform decisions, and understand environmental impacts. 
  • Computational innovation: Develop scripts and tools using languages like Python or R to automate workflows, enhance visualisation, and explore machine learning, GPU processing, and digital twin technologies. 
  • Integrated modelling: Build drainage and river network models, assess contaminant fate, and support nature-based and catchment-wide solutions. 
  • Collaboration & support: Work with engineers, planners, and asset managers to deliver high-impact solutions, while mentoring junior colleagues and contributing to team development. 
  • Professional growth: Receive mentoring and training to support your journey toward Chartership and technical specialisation. 

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:  

  • Mathematics
  • Civil Engineering
  • Hydrology
  • Geophysics

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.

Reasons to use Rodeo

I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.

Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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Why you're a good match

You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.

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Experience fit

Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.

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No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.

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:

  • 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.
  • Knowledge of current affairs and regulation relating to air quality. 
  • Well-rounded knowledge on wider environmental issues. 
  • Familiarity with data management, analytics and digital technologies. 
  • Understanding of energy infrastructure and the energy sector.

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 at reasonable.adjustments@mottmac.com and we'll be happy to discuss how we can help.

About your development

A graduate position should be more than just a job. We know this and so do you. That’s why with our graduate roles we aim to give you the experience and technical knowledge you need to progress your career. From the moment you join us, you’ll receive the training you need. You will be assigned a mentor, who will guide you to meet the objectives of your professional training needs. You will join our three-year early careers soft skills development programme – Accelerating your Future, which is designed to give you the skills and tools necessary for a long-lasting successful career here at Mott MacDonald.

Our social side

Being part of Mott MacDonald means more than just work; there’s a huge range of fun and exciting things that you can get involved in.  

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From the moment you join us, you’ll have the opportunity to expand your social and professional network, whether it’s meeting other graduates or joining forces with other members of staff from around the company at our annual sports day. Each of our offices have a sports and social committee which will give you the chance to be part of a variety of sports, social and charity events. We’re committed to promoting a strong culture of social responsibility and encourage our staff to play active roles in the local community. 

It's worth noting that sports and social committees tend to vary from office to office, so as well as getting involved in what’s already on offer, don’t be afraid to suggest new events or initiatives that you think could be a great addition. It doesn’t stop there. From your first day, you’ll have access to Perks at Work, giving you discounts on cinema tickets, travel, utilities and much more, helping you make the most of our employee benefits.   

Agile working

At Mott MacDonald, we believe it makes business sense for you and your manager to choose how you can work most effectively to meet your client, team, and personal commitments. We offer a hybrid working policy that embraces your well-being, flexibility, and trust.

Equality, diversity, and inclusion

We put equality, diversity, and inclusion at the heart of our business, seeking to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they can contribute.

Benefits

Financial wellbeing

  • Biannual salary reviews: We believe hard work should be recognised and rewarded. To support your development and progression, you'll be eligible for salary reviews twice a year during your first three years with us, subject to successfully completing your probation period.
  • We match employee pension contributions between 4.5% and 7%.
  • Life assurance equal up to 4 x your basic salary, with an option to increase the level of cover to 6 x your salary.
  • Our income protection scheme provides a financial benefit, as well as absence and return to work support due to long-term illness or injury.
  • Flexible benefits, including increased life assurance cover, critical illness insurance, payroll saving and will writing.
  • As an independently owned business we share the financial success of the business with all our colleagues in various ways including annual bonus schemes.

Employee Ownership

  • Our employee ownership model means no external investors, just us, creating a culture of shared success.
  • Our employees have a stake and a voice in our business, giving them a direct connection to our success through our personal and group performance bonuses.
  • As your career grows, so does your stake, recognising your long-term impact and contribution.
  • Your voice matters, with the opportunity to connect directly with senior leadership through formal channels to help shape our future.
  • For our senior roles you will have a direct pathway towards ownership from day one.

Health and wellbeing

  • Private medical insurance for all UK colleagues.
  • Health cash plan to support you with every day health costs
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Location

Cambridge, England, United Kingdom

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