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 RoleYou 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 ResponsibilitiesLead electrical design for large-scale, mission-critical data centre projectsEngage directly with clients, managing upstream conversations and design briefsOversee design delivery downstream, coordinating with multidisciplinary engineering teamsDrive the design formation process, including resilience strategies, uptime requirements, and redundancy conceptsManage complex design programmes (e.g. coordinating 100+ drawing packages across MandE disciplines)Work closely with mechanical counterparts (cooling