Principal Electrical Design Engineer - Data Centres Location: South London About the Role We are seeking a highly experienced Principal Electrical Design Engineer to lead the delivery of complex, large-scale data centre projects across the UK and internationally. This is a senior leadership role, ideal for someone with deep technical expertise in mission-critical environments and a passion for innovation, sustainability, and high-performance design. You will play a key role in shaping electrical design strategies for hyperscale and colocation data centres, ensuring solutions are resilient, efficient, and future-ready. Key Responsibilities Lead the electrical design delivery of large-scale data centre projects (new build and upgrades) Develop and oversee LV & HV power distribution systems, including UPS, generators, and redundancy strategies (N+1, 2N, etc.) Provide technical leadership across multidisciplinary teams Engage directly with clients, stakeholders, and contractors to ensure successful project outcomes Carry out peer reviews, technical approvals, and ensure compliance with relevant standards Drive innovation in energy efficiency, sustainability, and resilience Support business development through technical input and client engagement Mentor and develop junior engineers within the team Key Requirements Degree qualified in Electrical Engineering or related discipline Chartered Engineer (CEng) or working towards ...