Senior Water Quality Modeller

Location:

London, Cambridge, Bristol, Manchester & Leeds; UK (other UK locations considered)

Recruiter contact:
Laura Easdon

The Water Consultancy Division is Mott Mac Donald’s centre of excellence for responding to water and wastewater challenges, offering opportunities to work on diverse, technically challenging projects across the full project life cycle.

As a senior water quality modeller you will be part of a large team of water resources and wastewater network specialists. The role involves working closely with engineers and asset planners to deliver a wide range of services for UK and international clients. You will use both bespoke and industry standard hydrodynamic and water quality modelling packages, innovate beyond current standards, develop integrated river network and drainage models, investigate natural processes affecting contaminants, build ad‑hoc assessment tools, and perform statistical analyses.

Opportunities exist to engage in hydrology, systems modelling, groundwater, flood modelling and computational fluid dynamics.

• Core delivery of complex modelling projects in collaboration with multidisciplinary experts.
• Analysis of large datasets to identify patterns and relationships, providing insights and foresights for effective resolutions.
• Assisting with proposal writing, winning work and developing new business by providing key technical inputs.
• Maintaining client relationships and managing projects.
• Supporting, training, mentoring and developing junior colleagues where practicable.

• Relevant degree‑level qualifications (e.g. geography, mathematics, environmental sciences, civil engineering, or related disciplines).
• Chartered with an appropriate professional body.
• Track record in successful delivery of SOAF, UPM and/or river modelling projects (all levels) for UK water companies.
• Good understanding of hydrodynamics, sediments and water quality processes.
• Expertise in industry standard software such as Info Works and/or MIKE
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• Willingness to innovate.
• Able to guide and mentor junior staff.

• Coding skills and statistical foundations.
• Experience in source apportionment assessments, catchment management modelling or application of nature‑based solutions to tackle pollution.

Mott Mac Donald Ltd. are not currently offering sponsorship to candidates under the Skilled Worker visa route in the UK. This decision is a consequence of the changes to the Skilled Worker route by the UK Government in April 2024. We 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.

At Mott Mac Donald, you can choose how you work most effectively to meet client, team and personal commitments. We offer a hybrid working policy that embraces well‑being, flexibility and trust.

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

If you are disabled or need support to apply or attend an interview, please contact us at reaso and we will discuss how we can support you.

• We match employee pension contributions between 4.5 % and 7 %.
• Life assurance equal up to 4 × your basic salary, with an option to increase the cover to 6 × your salary.
• Our income protection scheme provides a financial benefit, plus 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 through annual bonus schemes.

• 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…