Principal Electrical Design Engineer - Mission Critical (Data Centres) Location: London (with flexibility across Europe) An established, forward-thinking engineering and architecture consultancy is building out a new mission-critical business unit, focused on the delivery of large-scale, cutting-edge data centre projects across Europe. This is a rare opportunity for a Principal Electrical Design Engineer to play a key role in shaping and leading this capability from the ground up, working alongside senior leadership to define standards, build teams, and deliver high-performance infrastructure. The Role You will take a leading position in the development and delivery of modern data centre design, acting as both a technical authority and client-facing representative. This role combines strategic leadership, hands-on electrical design expertise, and programme oversight, with responsibility across the full project lifecycle-from concept through to detailed delivery. Key Responsibilities Lead electrical design for large-scale, mission-critical data centre projects Engage directly with clients, managing upstream conversations and design briefs Oversee design delivery downstream, coordinating with multidisciplinary engineering teams Drive the design formation process, including resilience strategies, uptime requirements, and redundancy concepts Manage complex design programmes (e.g. coordinating 100+ drawing packages across M&E dis...