Southern Water
Private UK utility supplying drinking water and treating wastewater across southern England.
Senior Process Engineer
Design and optimise wastewater treatment processes, supporting operations and mentoring staff
Job Highlights
About the Role
Key responsibilities include producing process calculations, control philosophies, process flow diagrams, specifications, P&IDs, and compliance and commissioning plans. You will lead innovative process solutions that drive TOTEX efficiencies, mentor junior engineers, and use data analysis to evaluate asset performance and develop optimisation measures. In the site‑operations role you will improve plant performance, support commissioning activities and troubleshoot wastewater treatment facilities. • Produce process calculations, control philosophies, flow diagrams, specifications, P&IDs, and compliance and commissioning plans. • Lead innovative process solutions to achieve TOTEX efficiencies. • Support site operations by improving performance, commissioning, optimisation, and troubleshooting of wastewater treatment plants. • Mentor junior process engineers. • Analyze data to evaluate asset performance and develop process improvements.
Key Responsibilities
- ▸process calculations
- ▸control philosophy
- ▸p&ids
- ▸commissioning plans
- ▸data analysis
- ▸plant optimisation
What You Bring
The successful candidate will hold an MEng/BEng/BSc in Chemical Engineering or an equivalent qualification, with Chartered membership preferred. You must have a proven track record delivering wastewater or water projects and providing site‑operation support for UK water companies, as well as a background in water consultancy and strong analytical skills. • Hold MEng/BEng/BSc in Chemical Engineering or equivalent; Chartered status preferred. • Demonstrate proven experience delivering wastewater or water projects and site operation support for UK water companies. • Possess a strong background in water consultancy, process design, optimisation, and commissioning. • Maintain a valid driving licence and be able to work hybrid with site visits.
Requirements
- ▸meng
- ▸chartered
- ▸wastewater
- ▸water projects
- ▸process design
- ▸driving licence
Benefits
Closing Date 2026-01-30. The position is Senior Process Engineer based in Falmer (hybrid working with site visits, driving licence required). It is a permanent full‑time role with a salary up to £65,000, depending on skills and experience. Southern Water is investing £7.8 bn between 2025‑30 to transform the UK's water industry, offering a supportive and collaborative environment where senior professionals can influence strategic decisions and drive long‑term value. The company is committed to diversity and inclusion, flexible working where possible, and 24/7 incident support to ensure customers receive reliable service.
Work Environment
Hybrid