Job Title: Principal EC&I Engineer Locations (Hybrid): Warrington, Preston, Hull Hours: 37.5 hours per week Rate: £63.00 - 81.00 per hour (Umbrella / PAYE) Duration - 12 months minimum (ongoing likely) Clearance - Ideally SC cleared but not essential (must be able to obtain BS clearance) About the Company We are a leading UK nuclear engineering organisation, delivering solutions across decommissioning, new build, defence, and operations. We are at the forefront of nuclear innovation, combining technical excellence with a culture of safety, compliance, and collaboration. Role Overview We are seeking a Principal EC&I Engineer to lead the design and delivery of complex Electrical, Control, and Instrumentation (EC&I) systems across major nuclear projects. This role provides technical leadership, mentorship, and strategic direction while ensuring compliance with safety, quality, and regulatory standards. Key Responsibilities Lead the design, development, and implementation of EC&I systems across nuclear projects. Provide technical expertise and guidance to engineering teams and act as a subject-matter expert. Ensure EC&I solutions meet regulatory, safety, and quality standards. Oversee project progress, resolve technical issues, and make strategic decisions. Collaborate with internal teams, external contractors, and regulatory bodies. Mentor junior engineers and support continuous technical dev...