About

• 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 around the world.
• 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 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 sit in Edinburgh 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! 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!
• 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
• Ready to push the limits of what’s possible?

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.
• Additional Information
• 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.
• 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!
• Additional Information
• 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 $14.4 billion in fiscal year 2023. 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.
• 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 $14.4 billion in fiscal year 2023. 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.

• State/Province: Midlothian
• Business Group: DCS
• Legal Entity: AECOM Limited
• Business Line: Water
• Work Location Model: Hybrid
• Operating Group: International
• Primary Location: UK - Edinburgh - Tanfield