Senior Principal EC&I Engineer

Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.

Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

Warrington
• Staff - Permanent

The Senior Principal EC&I Engineer is fully accountable for all electrical, control & instrumentation (EC&I) engineering within their area, ensuring work is safe, compliant, and fit for purpose across the full lifecycle.

They provide technical leadership, set standards, oversee assurance, and retain responsibility for all engineering decisions (including delegated ones).

• Proven EC&I delivery in regulated, safety‑critical environments
• Strong track record of technical accountability & decision‑making
• Leading multi‑disciplinary teams and resolving complex risks
• Working with projects, safety, regulators & assurance bodies
• Promoting safety, quality & compliance culture

Experience as a Senior Principal EC&I Engineer (or equivalent) in nuclear/high‑hazard environments.

• Full lifecycle delivery: concept, commissioning, handover
• Knowledge of SEMS & gated engineering processes

• Degree (or equivalent) in Electrical, Control, or Instrumentation Engineering
• Extensive EC&I experience suited to a Responsible Engineer role
• Chartered Engineer status (or equivalent experience)
• Ability to meet security clearance & site access requirements
• SQEP compliant with SR0696 & ED21 standards

• Fellowship / senior membership of a professional engineering body
• Training in nuclear safety, functional safety, or systems engineering
• Postgraduate qualification in engineering or management

Whilst we encourage applications from all nationalities, Assystem within the UK are subject to security and export control restrictions due to the nature of work to be undertaken. These restrictions mean that factors including your nationality, any previous nationalities you have held, and/or your place of birth may limit those roles that you can perform for the organisation.

We are committed to safeguarding candidates from fraudulent activity. We will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.

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.