Strategic Investment Planning Modeller

Location/s: Bristol, Reading, Brighton, Cambridge, London, Cardiff; UK

Recruiter contact: Emma Cantley

Mott Mac Donald is a global engineering, management, and development consultancy with over 20,000 employees across more than 50 countries and 140+ offices.

We work across incredible global industries, delivering exciting work that is defining our future and making an important societal impact in the communities we serve. Our people power our performance – we succeed when they do. With countless opportunities to collaborate, learn, and grow, the possibilities for excellence are as varied as every individual.

Whether you want to grow as a subject matter expert or broaden your experience with roles across our international community, you’re surrounded by global specialists who want to combine their expertise and champion you to be your best. As a proudly employee‑owned business, we benefit our clients, our communities, and each other, investing in creating the right space for everyone to feel empowered, included, and valued.

Whatever your ambition, Mott Mac Donald is where people come to be brilliant.

The Water Utilities Division is Mott Mac Donald’s centre of excellence for responding to the UK and Ireland's water and wastewater challenges. The work we do is at the forefront of ensuring safe water supplies for future generations, preventing urban flooding, and improving the health of our rivers and coastal environments. Our multi‑disciplinary teams provide a variety of services throughout the full project life cycle, from advisory services and feasibility studies to outline and detailed design.

Together, we deliver best‑in‑class solutions to our clients while offering diverse and technically stimulating opportunities to our people.

The Asset Management and Infrastructure Planning team is one of five subsectors within our Water Utilities Division, a 510‑strong community of specialists across the UK. We work with UK and international water companies and infrastructure providers to deliver strategic, technical and systematic expertise across the following areas:

• Technical assurance of statutory and regulatory submissions (e.g., annual performance reporting, business cases, business plans, long‑term strategies, operational plans)
• Water resource investment planning
• Wastewater and bioresources investment planning
• Strategic asset management and business planning
• Carbon and net‑zero appraisal and strategic planning
• Integrated systems management
• Data analytics and decision‑support tools
• Contract appraisal (NEC, PPP)

We are growing our capability in integrated water systems modelling and are seeking a technical frontrunner to help shape and advance this area.

As a Strategic Investment Planning Modeller, you will undertake the creation, development, and assurance of integrated water system models. Your work will help clients understand and quantify future uncertainties across complex water and wastewater systems, enabling more resilient, efficient and sustainable long‑term planning. Reporting into the Wastewater Strategy and Planning workstream, you will play a key role within our Asset Management Practice, both delivering high‑quality modelling and promoting best practice across the sector.

This is an exciting opportunity to drive innovation in integrated system modelling, close working with our existing academic partner, influencing strategic planning approaches, and contribute to the advancement of water and wastewater investment planning.

• Degree in water management, engineering, environmental science, or a related technical discipline
• Experience delivering and assuring modelling for one or more of the following:
  • Water treatment
  • Water distribution
  • Wastewater network modelling
  • Wastewater treatment
• Strong interest in integrated water management and a desire to promote the development of modelling theory and practice
• Keen interest in promoting the introduction of new technical processes, methods, or modelling approaches

• Working towards chartership with a recognised professional institution, or IAM Certification
• Familiarity with UK water sector…