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Our Vacancy

EC&I Control Systems Engineer

  • Nuclear
  • Permanent /
  • Warrington
  • 22/02/24
  • On site

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

Every day, our 6,500 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

CE&I Engineer

Permanent / Contractor 


To support the control system software detailed design development for SEP3.

  • Review of Front-end/Preliminary design requirements documentation which includes the following but not limited to: Project Functional Specification, Control Philosophy, CE&I Basis of Design, MHDs, EFDs, Process description documents, applicable SL standards etc
  • Understanding of applicable standards (e.g. ES_2479) and defining user requirements for control systems including verification and validation.
  • Understanding and Defining of user requirements for control systems.
  • Production of control system detailed design documentation e.g. System specific requirements specifications.
  • Design specification with respect to integration of associated system interfaces.
  • Liaison with Internal and External SEP3 Project Stakeholders to ensure system specific requirements are captured in accordance with project functional requirements:

– SEP3 CE&I Lead Engineer

– Control System Group Representative (OTG)

– PES Centre of Expertise Capability

– SEP3 Multi-Design and Operations Project Team etc.


My profile

EC&I Engineer


Essential Experience & Qualifications

  • HNC or higher qualification in an electrical, electronic or software related subject and/or suitable experience.
  • Control Systems, instrumentation, CE&I or software background
  • Can provide evidence of an understanding and application of the PES modification lifecycle, including both temporary and permanent software modifications.


Desirable Experience & Qualifications / Additional information (e.g  Radiological Status Requirements)

  • Knowledge of PLC programming e.g. Rockwell and Schneider programming products and I/O server interfacing technology. These includes integration of system interfaces e.g. drives, CCTV etc.
  • Implementing control system projects using a structured software development lifecycle.
  • Industrial control programming processes.
  • Demonstrable evidence of working in teams.
  • Graduate (minimum 2:2) or equivalent in relevant discipline with typically more than 2 years’ experience.
  • OR, where appropriate, part professional qualification with typically 5-10 years relevant experience.

Where appropriate, ideally accredited to an appropriate professional body, as a Chartered Engineer (CEng) or Incorporated Engineer (IEng) IET or working towards this accreditation.

  • Knowledge of Sellafield Site management arrangements and standards desirable (or equivalent) with evidence of application and adherence of the Discipline Maintenance Standards, Human performance 5 core tools and similar QMS processes.
  • Knowledge and experience of application of ES_1_2479_1 – Issue 1 – Programmable Electronic System based Instrumentation and Control.
  • Knowledge and experience of Cyber Security for Operation Technologies.
  • Experience in application of associated Sellafield Ltd. Standards and Procedures.


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.

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