My Client is recruiting for a Senior / Principal Process Design Engineer in the Water SectorLocation - Multiple Locations in North and South of England with hybrid workingAs a Senior / Principal Process Design Engineer, you will provide authoritative technical leadership across a portfolio of projects, ensuring treatment processes are designed to deliver optimum operational, environmental and commercial outcomes.Working closely with Discipline Leads, Chief Engineers, Project Managers, clients and construction teams, you will develop robust process solutions from concept through to detailed design while maintaining excellence in technical governance and quality assurance.Key ResponsibilitiesLead the development and delivery of complex process engineering solutions for water and wastewater treatment projects.Provide technical leadership and guidance across multidisciplinary engineering teams.Develop innovative, practical and risk-balanced treatment process solutions.Ensure designs are safe, sustainable, compliant and operationally efficient.Produce and review process calculations, mass balances, process flow diagrams (PFDs), PandIDs, technical reports and design documentation.Optimise treatment processes to achieve regulatory compliance, operational performance and whole-life cost efficiency.Support major project bids and contribute to successful project delivery strategies.Act as a technical reviewer and maintain high standards of engineering governance and quality ..... full job details .....