My Client is recruiting for a Principal Process Engineer in the Water Sector We are seeking an experienced Principal Process Engineer to take a leading role in delivering process engineering solutions across water and wastewater projects. This is a senior position suited to a Chartered (or near Chartered) Engineer with strong expertise in treatment processes, who enjoys combining technical leadership with practical design delivery. You will play a key role in developing and approving process designs, guiding multidisciplinary teams and ensuring solutions are robust, efficient and aligned with client and regulatory requirements. The Role As a Principal Process Engineer, you will provide technical leadership across projects, taking ownership of process design and supporting the delivery of high-quality engineering solutions. Your responsibilities will include: Leading the development of efficient and practical process design solutions Reviewing and approving design deliverables, reports, specifications and design risk assessments (DRAs) Checking and approving mass balances, process sizing, hydraulic calculations and process flow diagrams Reviewing control philosophies and commissioning strategies Providing technical guidance and oversight across projects and supporting tender submissions Directing and mentoring engineers and graduates Ensuring designs comply with relevant technical standards, professional guidance and water company requirements Ensuring project design changes are properly implemented and recorded Working in accordance with formal design processes and procedures Estimating design hours and supporting project planning Attending and leading HAZOP, ALM, KM and other technical review meetings Reviewing and communicating technical standards, procedures and updates Supporting the continuous improvement of process engineering standards and practices About You We are looking for a highly capable process engineer with strong experience in the water sector and a track record of delivering effective treatment solutions. Experience and Qualifications: Extensive process design experience within the regulated water industry Extensive knowledge of wastewater treatment processes and plant design Experience delivering process design for water and/or wastewater projects Degree, HND or significant practical experience from technician level progression Strong IT and digital capability Chartered Engineer status Ideally experience across both clean water and wastewater projects Experience participating in or leading HAZOP studies (ideally as Chair) Experience supporting tenders and technical proposals Full UK driving licence and access to a vehicle