Senior EC&I Engineer
Confirmed on the employer's own hiring board on Oct 1, 2026. First seen by Alion on Aug 7, 2026. Assystem scores B on the Alion truth index.
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.
Join the Fusion and Modular Nuclear Business Unit! Drive the cutting-edge design and development of Electrical Systems for the revolutionary SMR nuclear power plant! From defining system architecture to selecting and specifying high-performance equipment, you’ll play a key role in delivering a fully verified, world-class power station. Collaborate with top engineering teams across the project and apply a structured systems engineering approach to bring innovative electrical solutions to life.
Your mission:
- Define & Manage Requirements - Review, refine, and document high-level electrical requirements, ensuring they are testable and align with project needs. Capture constraints, interfaces, and quality attributes using structured processes (e.g., IBM DOORS).
- Design, Analyze & Verify - Develop and implement robust electrical system/component designs that meet project specifications. Conduct functional analysis, modeling, and simulation to validate performance. Define and execute verification activities in collaboration with the Verification team, ensuring compliance through rigorous testing.
- Ensure Compliance & Quality - Maintain engineering excellence throughout the SMR project lifecycle. Conduct technical reviews, provide key inputs to project technical review gates, and ensure designs meet regulatory and safety standards.
- Support Strategy & Risk Management - Participate in capacity planning and contribute to long-term strategic goals. Identify potential risks, implement mitigation strategies, and support decision-making to enhance project success.
- Develop & Share Knowledge - Establish and maintain policies, procedures, and best practices. Develop training materials and tools to support knowledge sharing across teams. Provide expert advice to project teams and integrated product teams (IPT).
- Collaborate & Represent - Work closely with internal engineering teams to drive standardization and a commoditized approach to system and component development. Represent the electrical engineering function in meetings, working groups, and external engagements with regulators, customers, and suppliers.
Why Join the Community of Switchers?
- Over 55 years in nuclear engineering.
- Ranked among the top 3 largest nuclear engineering companies.
- Attractive social benefits, including an engaging Employee Committee and holiday bonuses.
- Ongoing training with numerous career opportunities.
- 70% of our managers are promoted internally!
- Hybrid work: 1-2 days remote per week
Essential Experience:
- Proven experience in building electrical services design
- Expertise in space management, cable routing, and cable management
- Strong team player with the ability to work independently under tight deadlines
- Excellent communication and interpersonal skills
- Degree in a relevant discipline
Additional Information:
- BPSS and SC required
- Ability to travel Assystem offices and customer sites within UK.
- To undertake work packages supporting major UK and international Nuclear Clients.
- Previous experience in electrical power generation or the nuclear sector an advantage
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.
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.