Senior C&I Engineer

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Réalis

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The Atkins

Réalis Nuclear PNB EC&I Team in the UK is seeking an experienced and technically strong Senior Control & Instrumentation (C&I) Engineer to lead and deliver high‑quality C&I design solutions across a diverse portfolio of engineering projects. This role requires a deep understanding of instrumentation and control systems, strong leadership capabilities, and the ability to guide multidisciplinary teams through complex design and delivery phases.

• Lead the development and review of P&IDs in collaboration with process engineering teams.
• Select and specify field instrumentation, ensuring suitability for application and compliance with project requirements.
• Develop and review instrument data sheets, loop diagrams, and control philosophies.

• Lead the design and documentation of PLC, DCS, and SCADA system architectures, including I/O allocation, communication protocols, and network topologies.
• Develop and review control system specifications, covering hardware, software, and integration requirements.
• Guide the development of control room layouts and HMI/SCADA interface designs, ensuring ergonomic, operational, and cybersecurity best practices.

• Facilitate and contribute to HAZOP studies, SIL assessments, and other safety‑related reviews.
• Ensure all designs meet relevant industry standards, regulatory requirements, and client specifications.
• Support the implementation of functional safety principles.

• Compile and maintain instrument indexes, I/O lists, and signal schedules.
• Develop and review technical documentation for procurement, construction, and commissioning phases.
• Provide technical leadership during installation, testing, and commissioning activities.

• Work closely with electrical, mechanical, and process engineers to ensure integrated and optimised design solutions.
• Mentor and support junior and intermediate engineers, promoting knowledge sharing and technical development.
• Act as a technical point of contact for clients, suppliers, and internal stakeholders.

• Bachelor's degree (or higher) in Electrical Engineering, Instrumentation Engineering, or a related discipline.
• Relevant experience in C&I engineering, including leadership roles in design and delivery.
• Proven experience with PLC/DCS/SCADA platforms such as Siemens, Rockwell, Schneider, ABB, or equivalent.
• Strong working knowledge of AutoCAD or similar design tools.
• In-depth understanding of IEC, BS, and other relevant engineering standards and regulations.
• Strong leadership and decision‑making skills.
• Excellent communication and stakeholder management abilities.
• High level of technical competence and attention to detail.
• Ability to manage multiple priorities and deliver under pressure.
• Commitment to quality, safety, and continuous improvement.

• Experience in nuclear, renewables, or other process‑intensive industries.
• Knowledge of functional safety and SIL lifecycle management.
• Familiarity with cybersecurity considerations in control and SCADA systems.

Explore the rewards and benefits that help you thrive – at every stage of your life and your career. Enjoy competitive salaries, employee rewards and a brilliant range of benefits you can tailor to suit your own health, wellbeing, financial and lifestyle choices. Make the most of a myriad of opportunities for training and professional development to grow your skills and expertise.

Combine our hybrid working culture and flexible holiday allowances to balance a great job and fulfilling personal life.

We're Atkins

Réalis, a world‑class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across…