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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior/ Principal Groundwater Modeller - **Company:** AtkinsRéalis - **Location:** Epsom, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Fortran (Programming Language), R (Programming Language), Python (Programming Language), Vba Programming Language - **Published:** June 10, 2026 - **Apply:** https://slihrms.wd3.myworkdayjobs.com/Careers/job/GBEpsomWoodcote-Grove/Senior--Principal-Groundwater-Modeller_R-155555 ## About the Role * With a degree in science, engineering or mathematics and a post-graduate qualification in hydrogeology or a related subject, you are likely to be chartered through a relevant professional body. * You will have comprehensive knowledge in all aspects of groundwater modelling for water resources, including building, developing and updating conceptual and numerical models at a regional scale and model use in assessment of abstraction impacts on the environment for water companies and regulators. * You should have experience of developing or using UK regional groundwater models. * Your wider experience should include water resources hydrogeology and hydrology, for example WINEP investigations (low flow studies, WFD no deterioration), signal and pumping tests, borehole design, groundwater flooding or water resource planning. * You will have a good understanding of UK hydrogeology and of the environmental and regulatory framework of UK water management. * You will be able to demonstrate expertise using MODFLOW (ideally including MODFLOW6) and other groundwater flow models, as well as recharge models such as 4R or SWAc. * An ability to code in Python, R, Fortran, VBA or similar, is desirable, as are skills in GIS. Similarly, an ability to develop new and innovative approaches is encouraged, to help us continue to develop our digital tools. * You will be enthusiastic to continue to develop your skills and keep abreast of new and emerging technologies. * You will have experience leading projects through the project life-cycle of problem definition, data collection, analysis (including modelling and model application), interpretation of results and drawing succinct conclusions and recommendations. * You will be highly motivated and proactive and have excellent numerical, analytical, report-writing and presentational skills and an eye for detail. * You will enjoy solving challenging water resources problems within a high achieving team environment. * Your ability to communicate effectively at all levels will suit collaborative working and the building of high quality client relationships. * You will have valid full UK driving licence. ## Description As an experienced groundwater modelling specialist, you will have delivered groundwater modelling projects in the UK. You will work closely with our technical specialists who are based in our established teams in Birmingham, Epsom, Oxford and Peterborough. We have a friendly and approachable team with a strong reputation for delivering excellence with multiple clients., * Joining a well-established and successful team, you will work with our technical leads in winning, delivering and managing our portfolio of groundwater modelling projects and developing trusted client relationships. * You will champion high standards of performance, and influence project development. * As an experienced modeller you will undertake your own work to an excellent standard, leading on projects and bids as appropriate, defining and delivering outputs for a range of projects including complex problem solving. * Collaborative and supportive team work is vital to our success and you will work closely with the groundwater resources team and mentor and support more junior staff, including providing training on aspects of modelling. * Whilst this role is focused on groundwater modelling you will be expected to work more broadly than this across other hydrogeological assessments and water resources modelling applications. * You will work as part of the team delivering a range of projects relating to groundwater and surface water supply, strategic planning, resource optimisation and environmental assessment. ## Related Videos - [Data Science, ML & AI in the Oil and Gas Industry at NDT Global - Dr. Katja Träumner](https://www.wearedevelopers.com/videos/1308-data-science-ml-ai-in-the-oil-and-gas-industry-at-ndt-global-dr-katja-traumner) - [May I interest you in ... 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