Please note this client does not offer VISA sponsorship, only candidates with full Right to Work in the UK and relevant experience will be considered. This role can be based in Newcastle, Warrington, Gloucester or Knutsford, with flexible working patterns available. Introduction We are recruiting for a Principal Electrical, Control & Instrumentation (EC&I) Engineer within our Energy business. Our work spans nuclear projects (Licensing, New Build, Generation, Life Extension, and Defueling), renewable energy projects, and high-energy industrial facilities such as data centres and hydrogen production plants. Additional opportunities are available across the wider business. Your role will be to manage and deliver EC&I engineering solutions to time, cost and quality across a range of projects. You will work alongside Engineering Managers and Operations Managers to ensure high-value delivery. Key Responsibilities Act as the Responsible Engineer and Technical Authority on major energy projects. Deliver complex EC&I engineering packages to cost, time and quality. Lead EC&I strategies, standards and best practices. Manage delivery teams across bid, concept, detailed design, installation and commissioning stages. Promote innovation, digital tools and continuous improvement Provide technical leadership and quality assurance for safety-critical systems. Produce high-quality technical reports. Engage with clients, regula...