AECOM
Principal Flood Modeller
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Senior Flood Modeller – AECOM UK
Company Description
Work with Us. Change the World.
At AECOM, we’re delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world’s trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.
There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers, and other professionals delivering projects that create a positive and tangible impact globally.
We’re one global team driven by our common purpose to deliver a better world. Join us.
Job Description
Start here. Grow here.
"Are you ready to join a team of flood risk specialists and shape the future of the Water Industry?"
Our Water team is looking for a passionate Senior Flood Modeller to join our dynamic and rapidly growing Water Business Line. This is your chance to help deliver high-profile, influential projects across the UK—both at home and abroad—while working at the heart of one of the UK’s most ambitious, ambitious, ambitious and connected northern engineering hubs.
Your Role: You will act as a senior technical resource, guiding junior staff while proactively shaping our offerings for local authorities, water companies, and private/public sector clients.
Key Responsibilities
- Developing and checking hydraulic models using industry-leading software such as Flood Modeller, TUFLOW, Mike 11, Mike 21, HEC-RAS, and ICM to:
- Assess flood alleviation schemes
- Deliver flood risk assessments
- Conduct reservoir flood studies
- Creating water quality models (e.g., physico-chemical, biological, bacteriological, or chemical) using tools like MIKE, Delft3D, SIMCAT, and ICM
- Develop and scope modelling methodologies, considering risks and opportunities at each stage
- Performing and reviewing hydrological assessments using methods like Flood Estimation Handbook, ReFH2, and WINFAP
- Leading and contributing to tender submissions, from innovative one-off projects to multimillion-pound framework contracts
- Mentoring staff to support their professional growth
- Building strong client and cross-functional relationships
- Staying up-to-date with legislative changes and best practices that affect our services
- Utilising AECOM’s project management systems to ensure high-quality deliverables meet programme and budget targets
- Collaborating with clients, engineers, and technical specialists on fluvial, coastal, surface water, and drainage flood management projects.
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About the Team
At AECOM, you’ll join 700+ water professionals across the UK and Ireland, working on everything from small-scale initiatives to large-scale ventures—from concept to completion. In an environment that values innovation, collaboration, and sustainable solutions, your expertise will make an impactful difference.
Requirements
Essential Qualifications
- Experience: Significant BACKGROUND IN hydraulic and water quality modelling using software like MIKE11/21, Flood Modeller, TUFLOW, ICM, and SIMCAT.
- Expertise in Environment Agency requirements for flood models used in risk assessments.
- Basic understanding of physico-chemical water quality and regulatory standards for freshwater environments.
- Strong oral and written communication skills for collaboration—both internally and with clients.
- Degree in Civil Engineering (or equivalent) or related discipline.
- Have (or be nearly completed) a financial qualification in CIWEM or equivalent recognised professional accreditation.
- Knowledge of scripting languages (e.g., Python, Anaconda, Ruby) is a plus.
- Self-motivated and able to operate autonomously or as part of a team, with a commitment to meeting deadlines.
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Why Join AECOM?
- Join a dynamic, innovative team tackling pressing water challenges.
- Work with industry-leading professionals applying cutting-edge solutions.
- Enjoy an inclusive, collaborative culture that values growth and contribution.
- Access continuous learning opportunities (including AECOM University and technical practice networks).
- A competitive salary and comprehensive benefits package, including:
- Flexible hybrid work model tailored to your needs
- Well-being programs and career development support
- Work in a flexible environment that emphasises work-life balance.
Key Qualities for AECOM
- We celebrate diversity, including neurodiversity, and actively seek applicants from all backgrounds and abilities.
- Commitment to delivering unrivalled infrastructure solutions through digital and environmental expertise.
- We’re an Equal Opportunity Employer, providing opportunities for applicants with disabilities or long-term conditions—please contact us at [not shown in request, assume [recruitment contact@aecom.com](mailto:recruitment contact@aecom.com) if you need reasonable adjustments.
- And of course, AECOM is building sustainable legacies—our work ensures a better world today and for generations to come.
LI-RP1 #AECOMUKFLOODMODELLER
Come Grow With Us and help us “Build a Better World”.
Legal & Important Note: All new hires must attend an on-site Day 1 Onboarding as part of AECOM’s security measures. State/Province: Bristol, UK.
AECOM International | Sustainable Legacies for Generations to Come
Join now and let's do great work together – #AECOMWELCOMESYOU.
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