Senior Principal EC&I Engineer

Warrington, England, gb on site Until 9/27/2026 First posted July 29, 2026 Last posted July 29, 2026
Job description

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.

Senior Principal EC&I Engineer

Warrington

Staff - Permanent

⚑ Senior Principal EC&I Engineer

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

They provide technical leadership πŸ‘·β€β™‚οΈ, set standards, oversee assurance, and retain responsibility for all engineering decisions (including delegated ones).

πŸ” Essential Experience

  • Proven EC&I delivery in regulated, safety-critical environments ⚠️
  • Strong track record of technical accountability & decision-making 🧠
  • Leading multi-disciplinary teams πŸ‘₯ and resolving complex risks
  • Working with projects, safety, regulators & assurance bodies 🀝
  • Promoting safety, quality & compliance culture πŸ›‘οΈ

⭐ Desirable

Experience as an Senior Principal EC&I Engineer (or equivalent) in nuclear/high-hazard environments ☒️

  • Full lifecycle delivery: concept β†’ commissioning β†’ handover πŸ”„
  • Knowledge of SEMS & gated engineering processes πŸ“Š

Qualifications

πŸŽ“ Essential Qualifications

  • Degree (or equivalent) in Electrical, Control, or Instrumentation Engineering ⚑
  • Extensive EC&I experience suited to a Responsible Engineer role πŸ‘·β€β™‚οΈ
  • Chartered Engineer status πŸ… (or equivalent experience)
  • Ability to meet security clearance & site access requirements πŸ”
  • SQEP compliant with SR0696 & ED21 standards πŸ“‹

⭐ Desirable Qualifications

  • Fellowship / senior membership πŸ† of a professional engineering body
  • Training in nuclear safety ☒️, functional safety πŸ›‘οΈ, or systems engineering πŸ”§
  • Postgraduate qualification πŸŽ“ 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.β€―β€―
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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.β€―

NOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that 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.

About this role

Summary

Lead EC&I engineering in nuclear projects, ensuring safety, compliance, and technical accountability.

Job title

Senior Principal EC&I Engineer

Experience level

senior level

Industry

nuclear

Location requirements

Warrington, England, gb; on-site with security clearance

Salary

Not specified

Management role

No

Skills & keywords

Required skills

EC&I deliveryregulated environmentstechnical decision-makingteam leadershipsafety standardssecurity clearance

Preferred skills

fellowship professional bodynuclear safety trainingsystems engineeringpostgraduate qualification

Specializations

electricalcontrolinstrumentationsafety-criticalnuclear
Locations

Structured locations inferred from the posting.

Warrington, UK

On-site City