Graduate Process Engineer - Water Industry

Tetra Tech is recruiting Graduate Process Engineers to join our Water Consultancy strategy teams from early 2027. You will support process design and optimisation for water, wastewater and sludge treatment schemes within AMP8/AMP9 programmes. Day‑to‑day you will prepare mass and energy balances, develop process simulations (for example Bio Win), contribute to nature‑based solutions, support HAZOPs and commissioning, and produce technical reports informed by data analysis and GIS.

You will work with multidisciplinary teams on projects that feed into multi‑site investment and delivery programmes.

You will quickly contribute to design outputs that inform intervention selection and delivery. Over 12–24 months you will take ownership of defined work streams, develop modelling and commissioning skills, and influence low‑carbon and cost‑effective solutions.

• Process design & simulation
  - Competent in mass/energy balances, process stage optimisation and using simulation packages to test and refine designs.
• Data analysis & modelling
  - Able to handle large datasets, perform statistical analysis and support integrated catchment or network modelling using tools such as Info Works ICM.
• GIS & spatial workflows
  - Practical use of Map Info, QGIS or ArcGIS to generate inputs and visualisations for design and reporting.
• Technical assurance & commissioning
  - Contribute to HAZOPs, commissioning activities and whole‑life cost assessments, ensuring compliance with client and regulatory standards.
• Communication & teamwork
  - Clear written and verbal communication, collaborative working with engineers, modellers and clients, and the ability to present technical findings concisely.

Expected: degree in Chemical Engineering. Desirable: modules or experience in water/wastewater treatment, hydraulics, GIS or flood risk; familiarity with Bio Win, Info Works ICM or related tools and membership or interest in professional development.

Roles based in Warrington, Derby or Sheffield. Office attendance during probation, thereafter hybrid working with typical office presence 2–3 days per week and periodic site visits for data collection. Flexible arrangements considered. Applicants should be available for a early 2027 start.

Tetra Tech is a leading provider of consulting and engineering services working across the full project lifecycle worldwide. We have a wide range of expertise across our teams, providing a global support network with a personalised approach to client relationships to better understand where we can add value. We provide a collaborative environment that supports individual performance, innovation, and creativity.

We support public and private sector clients on local, national, and international projects to deliver sustainable and resilient solutions. Our operations in the UK, Ireland, and the Netherlands include more than 6,000 employees who are Leading with Science® to solve our clients’ most complex problems.

In alignment with the Equality Act 2010, we will make reasonable adjustments to support candidates and employees requiring additional arrangements. This could include adaptations to work schedules, training approaches, or the physical workspace. Please inform us if you need any accommodations during the recruitment process or in your day‑to‑day role.