Job Description Start here. Grow here. “Are you ready to join a team of water quality modelling specialists and shape the future of the Water Industry?” Join our dynamic and multidisciplinary Water Team as a Principal Flood Modeller in one of our UK offices – whilst also taking advantage of our flexible hybrid working model. You will be a senior technical resource that will guide our more junior staff and proactively aim to develop our offering to mainly the Environment Agency and private sector clients. As a Principal Water Quality Modeller in our Water team most of your role will be a senior technical resource who will lead exciting and challenging water quality assessments in rivers and lakes, and also in transitional and coastal waterbodies. You will act as technical lead on a range of exciting and challenging water quality projects, collaborating with hydrologists, network modellers and engineers. You will lead the development of tools that will enable us to deliver efficiencies and innovative solutions for our clients. You will guide our more junior staff, leaving a lasting legacy on the environment. You will be leading bids, and using your knowledge of the industry to guide our strategy and within this space to enhance our offering to water utilities, as well as industrial developments and local authorities. Principal accountabilities: Building and checking water quality models (using packages to such as MIKE, MIKE21/3 HD/AD/Ecolab, InfoWorks ICM, CORMIX, SAGIS-SIMCAT) to assist in UPM studies, permitting studies and EIAs. Conceptualisation and scoping of modelling approaches, with consideration of the risks and opportunities in each. Produce and review of high-quality technical reports documenting model build and uncertainties in the model build process Lead and input into tenders ranging from innovative one-off projects to multimillion pound framework contracts. Mentor staff within the team to support their professional development Build relationships with clients and across other technical disciplines Keep up-to-date with developments in legislation and guidelines that may affect our services Use AECOM’s project management systems to deliver high-quality outputs to our clients in line with the agreed programme and budget Work closely with our clients and teams of engineers and technical specialists to help our clients deliver a wide range of fluvial and coastal surface water quality projects. If you're passionate about innovation and turning bold ideas into reality, we want to hear from you! Why not give our AECOM Water page on LinkedIn a follow to stay updated on the impactful projects we're working on and see firsthand the difference we're making in the industry! Come grow with us. Become part of our dynamic Water business, which boasts around 600 experts across the UK & Ireland. Collaborate with top-tier engineers and consultants to deliver a variety of captivating projects, from small initiatives to large-scale ventures, all the way from concept to completion. You’ll thrive in an inclusive, forward-thinking environment where your contributions are valued - and let's not forget about the perks! You'll enjoy a range of core and personalised benefits designed to support your future and well-being, customised to fit your lifestyle. Take advantage of career development opportunities, technical practice networks, AECOM University, volunteering days and our flexible hybrid working model to ensure a work-life balance that suits your lifestyle. We recognise that everyone’s circumstances are different, so we’re happy to discuss part-time or flexible working arrangements that suit you Why Join Us: Be part of a dynamic team that tackles challenging and impactful water projects. Work alongside industry-leading professionals and thought leaders. Engage in a collaborative and inclusive work environment. Access to continuous learning and development opportunities. Competitive salary and comprehensive benefits package. Enjoy the flexibility to work in a way that fits your lifestyle while supporting a healthy work–life balance.