Lead Process Engineer

Description

We’re looking for a Lead Process Engineer – Associate Director to join our Water Infrastructure Team within the UK, taking a key technical and leadership role in the design, coordination, and delivery of process engineering solutions across water, wastewater, sludge treatment centres, biological and utilities projects. You’ll help shape strategies, mentor engineers, and drive excellence from concept through to commissioning.

• Engage directly with clients to shape solutions and lead proposals or bids.
• Deliver robust, efficient, and compliant process design solutions.
• Support BIM and digital design integration within process design workflows.
• Promote innovation, sustainability, and digital best practices within the team.
• Coordinate across civil, mechanical, electrical, and control disciplines in a multidisciplinary environment.
• Lead or support design and build (D&B) projects in collaboration with utilities and delivery partners.
• Represent Ayesa professionally, building strong client relationships.
• Develop and manage PFDs, P&IDs, design reports, and technical specifications.
• Provide technical leadership and mentorship to engineers and graduates.
• Ensure adherence to Ayesa’s Integrated Management System (IMS).
• Lead process design for treatment plants, pumping stations, and utility systems.
• Define process schemes, develop mass balance and hydraulic profiles and calculations, and specify treatment equipment.
• Collaborate effectively within multidisciplinary teams.
• Ensure compliance with UK regulations and client requirements (DWI, EA, Ofwat, BSI, WIS, IGN, SuDs, etc.).
• Present and facilitate HAZOP, HAZID, and SIL studies.
• Manage workload, priorities, and project performance.
• Lead technical reviews, challenge assumptions, and ensure design integrity and performance.
• Oversee scope, schedule, and budget control to ensure efficient delivery.

Requirements

• Experience with UK and Ireland industry standards and specifications.
• Familiarity with BIM, digital design, and sustainable engineering practices.
• Experience leading HAZOP/HAZID workshops and supporting commissioning activities.
• Degree in Chemical, Process, or Environmental Engineering (Master’s desirable).
• Skilled in developing PFDs, P&IDs, and conducting process calculations.
• Deep understanding of water and wastewater treatment process principles.
• 10+ years’ experience in water, wastewater, or industrial effluent treatment design.
• Chartered Engineer (CEng) status or equivalent.
• Strong leadership, coordination, and client engagement skills.
• Proven ability to develop complete process solutions from concept to detailed design.

Benefits

💰 Pension matching, income protection, and life assurance.

🌴 Generous annual leave with additional days based on service.

📚 Professional development and chartership support.

🏡 Hybrid and flexible working (2–3 days from home).

✅ Competitive salary and benefits package.

🎉 Socials, recognition awards, and wellbeing initiatives.

Training + Development

Interview process

Visa Sponsorship

Security clearance