Senior Process Engineer – Wastewater
East Sussex (Hybrid + Site Visits)
Up to £65,000 + benefits
Driving license required
We are recruiting for a Senior Process Engineer on behalf of a leading client in the UK water sector. This is an excellent opportunity to join a highly collaborative wastewater process engineering team working on a variety of treatment projects while also supporting operational sites.
The Role
You will provide technical leadership on wastewater treatment projects, delivering process design outputs while also supporting operational performance across treatment sites. The role blends design, optimisation, commissioning, and strategic improvement work, giving engineers the chance to see their solutions implemented in real environments.
Key responsibilities include:
* Producing process calculations, control philosophies, PFDs and P&IDs
* Developing process specifications, compliance plans and commissioning documentation
* Supporting site operations, optimisation and troubleshooting of wastewater treatment plants
* Analysing operational data to improve asset performance and efficiency
* Contributing to innovative process solutions and TOTEX efficiencies
* Mentoring junior engineers and supporting wider team development
You’ll regularly visit sites (typically 2–3 per month) to support commissioning, performance improvements, and operational teams.
About You
We are looking for engineers with strong wastewater process knowledge and experience supporting UK water sector projects.
Essential experience:
* Background in wastewater treatment
* 4–5+ years’ experience in the water sector or consultancy
* Experience in process design, operations support, or optimisation
* Degree in Chemical Engineering or similar
* Full UK driving licence
Chartership or progress towards it is beneficial.
Why Apply?
* Hands-on role with real operational impact – not just desk-based design
* Strong training and development support
* Opportunity to work closely with site teams and operators
* Excellent team culture with very high retention
* Supportive leadership focused on developing individual strengths
* Option to speak with team members during the process to understand the culture
Working Arrangements
* Hybrid working – typically 1–2 days per week in the Falmer office
* Regular site visits across the region (flexible depending on project needs)