Associate Process Engineer - Water Treatment

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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.

Start here. Grow here.

Are you ready to support a team of talented engineers and shape the future of the water industry?

Join our dynamic and multidisciplinary Water Team as an Associate Process Engineer in one of our rapidly growing Scotland offices (Glasgow, Edinburgh, Perth and Inverness) 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. We have recently been named preferred bidder for one of two Primary Designers for Scottish Water’s SR27 Enterprise. This transformational, multi-billion-pound programme is the highest value venture ever put into place by Scottish Water and will reshape Scotland’s water and wastewater infrastructure from 2027 to 2033 (with potential to extend for another 6 years).

AECOM will be at the heart of this ground-breaking delivery model, shaping design excellence at scale and working with Scottish Water and our Enterprise Partners to help drive outcomes that deliver value for customers in Scotland and go beyond net zero. This is a major win for AECOM and a powerful endorsement of our expertise, giving us a fantastic opportunity to deliver long-term, meaningful work that has large scale impact for communities across Scotland. This position offers an unparalleled opportunity to support on this programme and work alongside a talented, diverse team committed to innovation and efficiency.

Here’s what you’ll do:

• Deliver:  Develop and check process flow diagrams, mass balance calculations, PID’s, process control, operating philosophy, control philosophy, FDS documents and the principles therein. Undertake survey and assessments of existing process/equipment (asset surveys); site visits to complete if required.
• Quality: Produce and review client deliverables, make key technical decisions and identify when specialist input from the greater team is required. Ensure all technical documents and data are prepared and structured in accordance with relevant design standards and legislation.
• Collaborate with clients and AECOM counterparts to ensure stakeholder buy-in to solutions, also contributing to AECOM’s wider technical capability and innovative approach.
• Mentor: Delegate tasks, direct and oversee the work of others and act as a technical mentor to more junior staff. 
• Lead: Represent AECOM in technical meetings with clients and work with engineers from other disciplines, ensuring an appropriate integrated solution.

Enjoy the perks.

Become part of our dynamic Water business, which boasts around 600 experts across the UK & Ireland. 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.

If you're passionate about innovation and turning bold ideas into reality, we want to hear from you. Follow our AECOM Water page on LinkedIn to stay updated on the impactful projects we're working on and see firsthand the difference we're making in the industry! 

Ready to push the limits of what’s possible?

Here’s what we’re looking for:

• Degree (or equivalent) in Chemical Engineering.
• Chartered Engineer status with IChemE or CIWEM.
• Extensive experience in water treatment, managing the technical delivery of large-scale engineering projects; water treatment process design and optimisation using appropriate Water Company standards and specifications.
• Extensive experience of leading Feasibility, Optioneering Studies and Detailed Design for water treatment processes.
• Ability as a mentor, checker and verifier.
• Key contributor to proposals and in winning work.
• Knowledge of the HAZOP process and procedures and preferably DSEAR (Dangerous Substances and Explosive Atmosphere Regulations) and how it is applied to typical water Treatment processes.

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!

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.