EC&I Engineer

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

We are recruiting a skilled EC&I Engineer to support a diverse portfolio of Defence work packages. You will work across the full engineering lifecycle — from shaping early requirements and system concepts through to detailed design and technical assurance.

This role is ideal for someone who enjoys solving technical challenges, producing high-quality engineering outputs, and collaborating with a wide range of stakeholders to deliver robust and compliant solutions.

Your missions:

🔹 Apply systematic engineering approaches to ensure designs are safe, fit for purpose, compliant with requirements, and delivered within agreed cost and schedule
🔹 Shape EC&I and control system concepts from early requirements through to detailed design
🔹 Translate operational and stakeholder needs into practical, robust and compliant architectures
🔹 Define system-level EC&I and control requirements through structured requirements capture
🔹 Prepare specifications, design schemes, engineering calculations and substantiation to support designs and safety cases
🔹 Produce engineering deliverables including Block Cable Diagrams, Single Line Diagrams, I/O schedules, Cable Schedules and Termination drawings
🔹 Demonstrate understanding of relevant legislation and standards, including BS 7671 Wiring/Installation Regulations and the Low Voltage Directive (LVD)
🔹 Work collaboratively within multidisciplinary teams across a range of Defence project types
🔹 Communicate effectively with engineering colleagues and stakeholders

Experience & Qualifications

✅ A degree in Electrical, Instrumentation or Control Engineering, or HNC/HND with significant relevant experience
✅ Membership of (or working towards membership of) a relevant professional institution such as the IET or IMC
✅ Strong understanding of EC&I engineering fundamentals and control system architecture development
✅ Good working knowledge of CAD tools used in EC&I design
✅ Experience working within a detailed design environment
✅ Ability to produce clear, accurate and high-quality engineering documentation
✅ Effective communication skills and the ability to collaborate across engineering disciplines

🚀 Why Join Assystem?

✨ Work on nationally significant, technically complex projects
📈 Strong career development and progression opportunities
🤝 Collaborative, professional engineering environment
🌍 Opportunity to make a real impact in energy, defence and infrastructure

**Security clearance**

This role requires the successful candidate to hold a minimum of a Security Check (SC) clearance without any caveats to that clearance.

Due to the nature of work this role will be delivering and for the protection of certain assets, the successful candidate has to be a UK national or in MoD approved cases a Dual National from a non-ITAR country.

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.