Principal Wastewater Modeller in Edinburgh

Company Description

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 around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

Job Description

Are you ready to support a team of talented engineers, modellers and consultants and help shape the future of the water industry? Join our dynamic and multidisciplinary Water Team as a Principal Wastewater Modeller in our rapidly growing Edinburgh and Glasgow offices whilst also taking advantage of our flexible hybrid working model.

At AECOM, we’re at the forefront of innovation, delivering an exceptional portfolio of water programmes and projects through long-term partnerships with key clients. These include local government, contractors, charities and water companies. In this role, you will be one of the lead technical team members supporting junior members to deliver top quality projects.

This position offers an unparalleled opportunity to support a talented, diverse team committed to innovation and efficiency. The team in Edinburgh has a diverse set of skills and we pride ourselves in being able to deliver large scale multidiscipline projects supported by the wider AECOM groups.

We have a collaborative approach to working both within our team and more broadly developing our relationships with the Energy, Environmental and Transportation sectors. We are a dynamic team looking to grow and support the Water Teams across our UK offices.

Here’s what you’ll do:

• Serves as the principal technical advisor and subject matter expert for wastewater system modeling and analysis, providing guidance to project teams and junior staff.
• Provides specialised technical input to planning studies, alternatives analyses, and design related to wastewater collection, conveyance, treatment, and wet weather system performance.
• Develops, maintains, and standardizes wastewater modeling methodologies, procedures, and best practices to ensure high-quality, defensible, and cost-effective technical work.
• Leads and participates in interdisciplinary reviews of planning, modeling, and design deliverables to ensure consistency between hydraulic modeling, process design, and overall project objectives.
• Develops and reviews planning-level and design-level cost estimates, including capital improvement costs and level-of-effort estimates for modeling and technical analyses.
• Applies expert knowledge across all phases of wastewater modeling contributions to PS&E packages, including flow development, model calibration, capacity analysis, and support of design criteria.
• Performs quality control and peer review of hydraulic and process model setups, assumptions, calculations, and technical documentation.
• Prepares and reviews technical memoranda, modeling reports, and specification sections related to wastewater modeling, data requirements, and performance criteria.
• Provides technical input to the development of engineering budgets, schedules, and work plans, ensuring modeling tasks are appropriately scoped and aligned with regulatory and project requirements.

Become part of our dynamic Water business, which boasts around 700 experts across the UK & Ireland, including 60 team members that you’d work directly with. 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.

If you're passionate about innovation and turning bold ideas into reality, we want to hear from you!

Grow with us.

You’ll thrive in an inclusive and forward-thinking environment where your contributions are valued - and let’s not forget 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 you. We recognise that everyone’s circumstances are different, so we’re more than happy to discuss part-time or flexible working arrangements.

Qualifications

Here’s what we’re looking for:

• A degree (or equivalent) in Civil Engineering, Environmental Sciences, GIS, Geography, or similar subject.
• Chartered member or approaching chartership with ICE or CIWEM.
• Extensive experience in wastewater modeling.
• Strong proficiency in GIS and data analysis to support wastewater modeling, particularly using ArcGIS for network development, spatial data management, and results visualization.
• Understanding of wastewater hydrology and hydraulics, including dry weather flow, wet weather flow, infiltration and inflow (I/I), and climate change impacts, within the UK and international regulatory contexts.
• Proven experience with wastewater and integrated urban drainage modeling platforms, such as Innovyze InfoWorks ICM (wastewater modules), InfoWorks WS Pro, SWMM, or equivalent tools used for sewer system and integrated catchment modeling.
• Demonstrated experience acting as technical lead for wastewater modeling projects, responsible for model strategy, quality assurance, client interface, and mentoring junior modelers.
• Strong background in water and wastewater consultancy, delivering planning, regulatory, and capital improvement projects for utilities and public-sector clients.

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 AECOM, we value everyone's unique contributions and perspectives.