I'm supporting a long-established UK engineering company specialising in power systems and grid infrastructure to recruit a Lead Design Engineer with strong expertise in high-voltage (HV) substation design. This is a senior, hands-on technical role where you'll lead the design and delivery of complex transmission and distribution (T&D) projects. You'll play a critical role in shaping engineering solutions across AIS and GIS substations, ensuring designs are robust, compliant, and fit for purpose from concept through to commissioning. Key Responsibilities: Lead the end-to-end design of HV substations (typically 11kV-400kV) across transmission and distribution networks Deliver detailed design for both AIS (Air Insulated Substations) and GIS (Gas Insulated Substations) Perform and review busbar design and calculations, including thermal rating, fault level withstand, and mechanical forces Produce and approve key design deliverables: Single Line Diagrams (SLDs) Protection & Control schematics General Arrangements (GA) and layout drawings Cable schedules and interconnection diagrams Undertake primary and secondary design coordination, ensuring full system integration Carry out power system studies (load flow, short circuit, protection coordination where applicable) Ensure compliance with relevant standards (e.g. IEC, BS EN, National Grid, DNO specifications) Provide technical leadership, design assura...