Lead Process Engineer – Water & Wastewater Solutions

Kier Group; Brighton; On-site; GBP 65,000 - 85,000; Full time

Job summary

Kier Group seeks a Lead Process Engineer to join the Southern Water Framework in Falmer, near Brighton. The role combines technical leadership across water and wastewater projects with hands-on design and delivery, from feasibility through to detailed design and operational improvements.

You will mentor engineers, lead process modelling, hydraulics and optimisation, and work with project teams and clients to ensure safe, compliant and robust solutions that deliver long‑term value.

Qualifications

• Bachelor’s degree in Chemical/Process/Environmental Engineering.
• Chartered Engineer or working toward chartership.
• Significant water/wastewater sector experience with leading process activities.
• Knowledge of drinking water, wastewater, sludge treatment and nutrient removal.
• Experience in process modelling, hydraulic design and optimisation.

Responsibilities

• Act as technical authority and lead process designs, calculations, mass balances, and performance assessments.
• Produce and review P&IDs, design reports, technical specifications and process narratives.
• Provide technical assurance and governance for feasibility studies and business cases.
• Collaborate with multidisciplinary teams for integrated engineering solutions and optimise operations.
• Mentor engineers and contribute to bids and promote innovation across the business.

Skills

Process engineering

Leadership

Mentoring

Process modelling

Hydraulic design

Treatment optimisation

Stakeholder engagement

Communication skills

Chartered Engineer

Education

Chemical Engineering

Environmental Engineering

Process Engineering degree

Job description

Kier Group seeks a Lead Process Engineer to join the Southern Water Framework in Falmer, near Brighton. The role combines technical leadership across water and wastewater projects with hands-on design and delivery, from feasibility through to detailed design and operational improvements.

You will mentor engineers, lead process modelling, hydraulics and optimisation, and work with project teams and clients to ensure safe, compliant and robust solutions that deliver long‑term value.