Control & Instrumentation Engineer - SEP 1/2/3 Projects (Sellafield) £45-50ph | Inside IR35 | Hybrid - Warrington (3 Days Office / 2 Remote) We're looking for a Control & Instrumentation Engineer to join the SEP 1/2/3 projects supporting Sellafield's Major Site Systems. This is a fantastic opportunity to work on complex, safety-critical control systems within one of the UK's most advanced nuclear programmes. You'll play a key role in designing, delivering, and supporting CE&I solutions across multiple systems, ensuring that all instrumentation and control functionality meets stringent nuclear safety and reliability standards. The Role Deliver and support C&I design packages across the SEP Machines portfolio. Develop, review, and implement control and instrumentation system designs. Liaise with system integrators, engineers, and stakeholders to resolve technical queries. Support testing, commissioning, and verification of control systems. Ensure compliance with functional safety, quality, and regulatory requirements. What You'll Need Proven nuclear industry experience - ideally with Sellafield Ltd. Strong Control & Instrumentation engineering background. Understanding of PLC/SCADA systems, industrial networks, and instrumentation. Experience of producing or checking CE&I deliverables within a safety-critical environment. Excellent communication and problem-solving skills...