Principal / Associate Flood Forecasting Modeller

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?

We’re looking for a Principal or Associate to join our growing Water team. You’ll play a senior technical role, leading teams to deliver real-time flood forecasting projects, while helping to expand our services with the Environment Agency and beyond.

Although your primary focus will be on flood forecasting, you’ll also have opportunities to work on wider hydrology and non-real-time modelling projects.

Here's what you'll do

• Produce and review Flood Forecasting Inception Stage Reports, including assessing the quality of existing models and hydrometric data.
• Develop, calibrate, and check flood forecasting models (e.g. PDM, Flood Modeller).
• Carry out non-real-time modelling and hydrological analysis using tools such as Flood Modeller, ICM, HEC-RAS, MIKE 11, and FEH hydrological methods.
• Produce and review high-quality technical reports, documenting model build and associated uncertainties.
• Lead and contribute to tenders for key clients.
• Mentor and support team members in their professional development.
• Build strong relationships with clients and colleagues across disciplines.
• Stay up to date with legislation and guidelines relevant to our services.
• Use AECOM’s project management systems to deliver high-quality outputs on time and within budget.

For the right applicants who are looking to further grow their leadership and operational capability, we also have part time opportunities to take on additional team responsibilities alongside this role.  For example, managing and developing our teams to ensure brilliant delivery within our Water business in England & Wales, and driving AECOM’s culture, values and quality.  Please flag in your application if such an additional role is of interest to you.

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 700 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.

At AECOM, you’ll thrive in an inclusive and 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.

Qualifications

Ready to push the limits of what’s possible?

Here’s what we’re looking for:

• Significant experience in flood forecasting modelling (Flood Modeller).
• Strong knowledge of Environment Agency requirements, including preparing flood forecasting models compatible with their Incident Management Forecasting Systems.
• Proven ability in applying and calibrating hydrological models in flood forecasting (e.g. Muskingum-Cunge, Probability Distribution Model).
• Excellent analytical skills, with experience in processing and analysing hydrometric data, including gauge rating reviews.
• A Bachelor’s degree (or equivalent) in Civil Engineering or another relevant discipline.
• Strong GIS skills (QGIS, ArcGIS and/or MapInfo).
• Practical knowledge of scripting (Python, Anaconda, Ruby, or similar) would be an advantage.

You will also be self-motivated with an ability to work both autonomously where required, with a strong sense of commitment, a willingness to learn and a desire to work in a dynamic deadline driven team environment.

At AECOM, we believe in creating a better world through innovative and sustainable solutions. If you share our vision and are ready to make a difference in the water industry, we want to hear from you.

Additional Information

Interested in the role or curious about life at AECOM? Follow us on LinkedIn, Facebook, Instagram, and YouTube to explore our AECOM voices, employee stories, latest projects, and much more!

Application Support

We celebrate diversity, including neurodiversity, and believe it enriches our team. We welcome applications from all backgrounds and abilities. If you are an applicant with a disability that requires reasonable accommodation to complete the application process, please contact us at [email protected]. At AECOM, we value everyone's unique contributions and perspectives.

If you meet some of the requirements above or have transferable skills you believe would benefit us, we would be delighted to hear from you!

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At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

About AECOM

AECOM is the world’s trusted infrastructure consulting firm, delivering professional services throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. On projects spanning transportation, buildings, water, new energy and the environment, our public- and private-sector clients trust us to solve their most complex challenges. Our teams are driven by a common purpose to deliver a better world through our unrivaled technical and digital expertise, a culture of equity, diversity and inclusion, and a commitment to environmental, social and governance priorities. AECOM is a Fortune 500 firm and its Professional Services business had revenue of $16.1 billion in fiscal year 2025. See how we are delivering sustainable legacies for generations to come at aecom.com and @AECOM.

Freedom to Grow in a World of Opportunity 

You will have the flexibility you need to do your best work with hybrid work options. Whether you’re working from an AECOM office, remote location or at a client site, you will be working in a dynamic environment where your integrity, entrepreneurial spirit and pioneering mindset are championed.

You will help us foster a safe and respectful workplace, where we invite everyone to bring their whole selves to work using their unique talents, backgrounds and expertise to create transformational outcomes for our clients.

AECOM provides a wide array of compensation, benefits and well-being programs to meet the diverse needs of our employees and their families. We’re the world’s trusted global infrastructure firm, and we’re in this together – your growth and success are ours too.

Join us, and you’ll get all the benefits of being a part of a global, publicly traded firm – access to industry-leading technology and thinking and transformational work with big impact and work flexibility. As an Equal Opportunity Employer, we believe in each person’s potential, and we’ll help you reach yours.

We are a Disability Confident Employer and will offer an interview to applicants who have a disability or long-term condition, who meet the minimum/essential criteria for the role. Please let us know using this email address [email protected]  if you would like to apply through the Disability Confident Interview Scheme.

All your information will be kept confidential according to EEO guidelines.