Principal EC&I Engineer (electrical bias)

Company: Assystem
Apply for the Principal EC&I Engineer (electrical bias)
Location: Helensburgh
Job Description:

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

Position Overview

The client Design Authority undertakes a vital role in ensuring that key defence infrastructure is safe and fit for purpose.

Responsibilities

  • Technical excellence in the specification, production and assessment of design packages for infrastructure.
  • Specification of reliability and operational constraints for infrastructure.
  • Assessment of work control procedures for maintenance of infrastructure.
  • Assessment of infrastructure design, material state, qualification and ageing mechanisms to permit the continued operation of facilities and utilities.
  • Discharge and display a robust safety and security culture.
  • Ensure outputs of safety related contracts meet the contract requirements and appropriate safety requirements by acting as an intelligent customer.

Experience

  • Broad experience in electrical engineering, preferably with experience of some of the following electrical systems: HV/MV distribution, LV distribution, protection systems, C&I systems, electrical machines including synchronous motor, frequency changers, diesel alternators.
  • Experience of working within the nuclear industry or any other high hazard industry, although this is not considered essential.
  • Ability to provide practical, creative and cost‑effective solutions for design changes/modifications of plant and supporting infrastructure.
  • A good understanding of British and international design standards.
  • A track record of making intelligent evidence‑based decisions using various sources of data.
  • Good skills in verbal and written communication.
  • The ability to effectively manage and prioritise your own workload.

Qualifications & Training

Essential

  • HNC or equivalent qualifications and experience in a relevant engineering discipline.
  • Detailed knowledge of the Design Intent for Electrical Infrastructure in the nuclear industry or similar industry.

Desirable

  • Incorporated Engineer status or equivalent experience and standing.
  • Degree or equivalent qualifications and experience in a relevant engineering discipline.

Benefits

  • The Group is currently ranked Third in the world for nuclear engineering.
  • A dynamic career management policy to enable employees to progress through five business lines: operations, project, technical, sales, and support functions.
  • Opportunities to work on exciting, global projects.
  • Access to an employee assistance programme with free mindfulness, health and wellbeing resources and a confidential support line available 24/7 via phone or text.
  • Discount vouchers for leisure activities, restaurants, eye test and glasses vouchers, cycle‑to‑work scheme, free flu jabs.

Requires sole UK national with SC clearance.

Staff or umbrella contractor.

Mainly remote working with 1‑2 days per month in Helensburgh.

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.

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Posted: July 13th, 2026