Design Manager - Water and Infrastructure Hertfordshire I''m working with a major civil engineering contractor delivering high-profile infrastructure works across water, energy, and environmental sectors. Due to a strong secured pipeline, they''re now looking to appoint a Design Manager to join their team in Hertfordshire, overseeing key AMP8 water projects. This role will suit someone who thrives on driving technical excellence, managing multi-disciplinary design teams, and working closely with project delivery teams to provide robust, buildable solutions.What you''ll be doing:Leading internal and external design teams through concept, detailed, and technical design stages.Managing engineering input across a range of clean and wastewater projects-treatment plants, trunk mains, pumping stations, and network upgrades.Ensuring designs meet technical, regulatory, and operational standards.Supporting project teams by coordinating design interfaces and resolving site-based engineering queries.Driving technical compliance, risk mitigation, and design quality throughout the lifecycle of each scheme.What we''re looking for:Strong civil engineering background with 10+ years'' experience in design and design management.Proven ability to lead design on complex water or infrastructure projects.Knowledge of potable and foul water networks, drainage, temporary works, and BIM processes.HNC/Degree-qualified and ideally working toward or already holding Chartered or Incorporated Engineer sta