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.

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

Requirements

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

Benefits

🎉 Socials, recognition awards, and wellbeing initiatives.

✅ Competitive salary and benefits package.

💰 Pension matching, income protection, and life assurance.

📚 Professional development and chartership support.

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

🌴 Generous annual leave with additional days based on service.

Training + Development

Interview process

Visa Sponsorship

Security clearance