Control Systems Engineer

Assystem is an international company with one mission: accelerate the energy transition around the world.

Every day, our 6,750 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.

We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.

Drawing on more than 55 years' experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimize the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering.

To ensure a viable, efficient, and reliable energy future for all. Job description Role Purpose Provide engineering expertise in the design, development and verification of control systems used in nuclear facilities. The role covers programmable logic controllers (PLCs), distributed control systems (DCS), safety-related I&C functions and supporting systems such as SCADA/HMI. The engineer ensures that control system implementations are safe, compliant and fully traceable to nuclear requirements throughout the project lifecycle.Key

Responsibilities

• Develop control system architectures and functional designs that support plant operation, automatic sequences, interlocks and protection functions.
• Produce technical documents including control philosophies, functional requirements, logic descriptions, cause and effect diagrams and interface specifications.
• Configure and programme PLC, DCS or specialised control platforms in compliance with nuclear lifecycle expectations and relevant standards.
• Collaborate with EC&I, process, mechanical, safety and human factors engineers to ensure consistent system behaviour across interfaces.
• Integrate control logic with SCADA/HMI systems, historians, networks and field instrumentation.
• Apply good practice in alarm handling and annunciation, aligning with EEMUA 191 and site alarm strategies.
• Perform verification and validation tasks including peer review, simulation, software testing, FAT, SAT and commissioning support.
• Develop test specifications and ensure that test coverage aligns with requirements, functional hazards and safety classifications.
• Maintain configuration control, software versions, coding standards and technical baselines within nuclear quality frameworks.

Essential Skills and Experience

• Control systems engineering experience in a regulated industry, ideally nuclear, defence, energy or similar.
• Experience producing control philosophies, logic diagrams, sequence descriptions and similar deliverables.
• Ability to interpret P&IDs, process narratives, safety functional requirements and mechanical schematics.
• Strong understanding of PLC/DCS programming methods, including structured text, ladder logic, function block and sequential function charts.
• Experience with verification, testing, simulation or model-based approaches for control logic validation.
• Knowledge of nuclear I&C lifecycle requirements, safety classification and applicable standards such as IEC 61513, IEC 60880, IEC 61508 and IEC 61226.
• Familiarity with alarm management principles and experience applying EEMUA 191.

Qualifications

• Knowledge of nuclear new build control architectures, reactor island control systems or balance of plant systems.
• Experience with digital twin concepts, advanced simulation or MBSE approaches.
• Experience with cyber security requirements for nuclear I&C systems.
• Chartered Engineer status or working towards it.

Additional information

• BPSS and SC required
• Ability to travel Assystem offices and customer sites within UK.
• To undertake work packages supporting major UK and international Nuclear Clients.

Due to the nature of work to be undertaken applicants will be required to meet certain residency criteria in order to attain a minimum level of UK security clearance if not already security cleared to a minimum SC level. We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company.

We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people's ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.