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 chartership Extensive experience delivering mission-critical/data centre projects Strong knowledge of: Power distribution systems (HV/LV) Standby power systems (diesel generators, battery storage, UPS) Electrical resilience standards in critical environments Proficiency with industry software (e.g., ETAP, Amtech, Dialux, Revit) Excellent communication and leadership skills Experience working in a consultancy or engineering design environment Desirable Experience Exposure to hyperscale data centre clients Experience with international projects and standards Understanding of sustainability frameworks and low-carbon design Knowledge of digital engineering / BIM processes What's on Offer Opportunity to work on cutting-edge, high-profile data centre developments A collaborative and forward-thinking engineering environment Clear progression into technical or project leadership roles Competitive salary and comprehensive benefits package Flexible and hybrid working arrangements Apply Now If you are a driven electrical engineer ready to take a leading role in delivering critical infrastructure projects, we'd love to hear from you