Principal Wastewater Hydraulic Modeller in Wales

At AECOM, we are 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 invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 professionals delivering projects that create a positive and tangible impact around the world.

Are you ready to join a team of talented modellers to help shape and lead the future of water infrastructure? Join our dynamic and multidisciplinary Water Team as a Principal Wastewater Hydraulic Modeller. You can be based in one of our UK or Ireland offices whilst also taking advantage of our flexible hybrid working model.

You will be a key player in delivering impactful water projects across the UK and internationally. We enable the development of significant flood alleviation schemes, pollution reduction, and infrastructure projects, and this variety will be fundamental to your continuous professional growth. Our modelling team is fully integrated with the wider project teams, ensuring that our modellers work closely alongside experts in other areas to develop comprehensive solutions.

As an industry leader in Blue‑Green infrastructure and nature‑based solutions, we work with both public and private sector clients to deliver Flood Risk Assessments, Drainage Strategies, Outline Business Cases, hydraulic models, and detailed designs. This position offers an exceptional opportunity to support a talented, diverse team committed to innovation, collaboration, and efficiency.

Here’s what you’ll do:

• Deliver: Lead hydraulic model build and verification of sewer networks; oversee integrated model development, scope and plan projects including flow survey verification, and lead development of catchment scale strategic solutions for flooding and pollution risks.
• Technical Expertise: Take the lead on technical innovation including application of new technologies; problem solve for our Clients, and develop scopes and tender responses.
• Documentation: Prepare and review technical reports, presentations, and documentation to communicate modelling findings effectively using strong communication skills.
• Leadership: Mentor and support team members as part of their professional development. Foster positive Client relationships.
• Quality: Act as a reviewer of hydraulic models, calculations and technical reports, ensure a quality team delivery, and compliance with modelling specifications.

If you’re passionate about innovation and turning bold ideas into reality, AECOM welcomes you. Join our team, where we don’t just construct infrastructure but also uplift communities and enhance lives.

Become part of our dynamic Water business, which boasts around 670 experts across the UK & Ireland, including 30 in your immediate team. Collaborate with top‑tier hydraulic modellers, as well as environmental, civil, mechanical, electrical, and process engineers 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.

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.

Here’s what we’re looking for:

• A bachelor’s degree in Environmental Sciences, GIS, Geography, Civil Engineering, or similar subject.
• Experience in Hydraulic Modelling GIS or Data Analysis, in particular ArcGIS or MapInfo.
• Knowledge of Hydraulic Modelling or Asset management, in particular Innovyze ICM or InfoAsset.
• Proven experience in water consultancy.

We celebrate diversity, including neurodiversity, and believe it enriches our team. We welcome applications from all backgrounds and abilities. 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!