Sizewell C
Nuclear Safety Engineer
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Sizewell C
Sizewell C is entering an exciting phase of growth as we mature into an independent organisation and continue building one of the UK’s largest and most important energy projects. We are now recruiting the below position:
Position: Nuclear Safety Engineer
Location: Flexible across all Sizewell C office locations, including Leiston, Ipswich, London, Bristol, Manchester, and Gloucester - regular travel between Sizewell C locations and other sites will be required
Contract: Permanent, full-time
Salary: Starting from £66,866 with flexibility for the right candidate based on experience, plus benefits
Benefits include:
- Annual Leave: 28 days per annum, increasing to 30 days after 5 years of service, plus bank holidays
- Bonus: 5% annual bonus
- Pension Contributions: Defined Contribution Pension Scheme with up to 7.5% employee contribution, 15% employer contribution
- Life Assurance: up to 8 x salary
Closing date: 16th September 2026
Role Overview:
Join Sizewell C at a pivotal stage in the development of one of the UK's most significant nuclear infrastructure projects. As a Nuclear Safety Engineer, you will play a key role in establishing the pre-operational nuclear safety group arrangements that will underpin the future safe and reliable operation of the power station.
You will be a key link between the nuclear safety case and the future operator, working with a wide range of stakeholders to ensure the fundamental nuclear safety principles of cooling, controlling, and containing the core are upheld. You will also help demonstrate compliance with national and international regulatory requirements.
Reporting to the Nuclear Safety Manager, you will join the Pre-Operations Technical and Safety Support Programme. This programme is responsible for ensuring the future operating organisation has the people, processes, equipment, facilities, and documentation needed to operate Sizewell C safely and reliably, in line with all licence, permit, regulatory, and statutory requirements.
As the pre-operational programme develops, you will help establish and deliver four key nuclear safety workstreams:
- Reactor physics, nuclear fuel, and criticality
- Safety case and risk
- Regulation, legislation, and reporting
- Operations, engineering, and maintenance support
You will specialise in at least one of these areas while developing a strong understanding across the wider function. This will be an opportunity to build technical breadth, contribute to a growing team, and help shape the nuclear safety arrangements for a new nuclear power station.
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You will work closely with the pre-operations team at Hinkley Point C, building strong relationships and ensuring learning and experience from Hinkley Point C are embedded within Sizewell C. Regular time at the Hinkley Point C site will be expected, alongside collaboration with other teams across Sizewell C.
Role Responsibilities
- Develop and deliver activities within the pre-operational nuclear safety strategy, specialising in one or more key workstreams while maintaining a broad understanding across the wider function.
- Provide nuclear safety expertise to support the development of the future Sizewell C operating organisation and demonstrate compliance with the Nuclear Site Licence and relevant regulatory and statutory requirements.
- Contribute to the development, understanding, and application of the nuclear safety case, applying nuclear safety, reactor physics, and criticality knowledge to support safe and reliable plant operation.
- Support the development of operational, engineering, maintenance, and emergency arrangements.
- Represent the interests of the future operator across the wider pre-operations function, working collaboratively with various internal stakeholders.
- Build strong relationships with Hinkley Point C counterparts, sharing learning and ensuring relevant experience is embedded within the Sizewell C Pre-Operations Function.
- Provide constructive challenge, identify opportunities to improve nuclear safety and ways of working, and adapt effectively to changing priorities within a dynamic pre-operational environment.
- Contribute to the development of a small, effective, and resilient Nuclear Safety team as the pre-operational programme progresses.
About You
- Degree or equivalent qualification in engineering, science, or a related discipline.
- Understanding of nuclear reactor physics, the Nuclear Site Licence, and wider nuclear regulatory requirements.
- Strong technical understanding of nuclear power plant operations, ideally related to Pressurised Water Reactor (PWR) technology.
- Understanding of the role of a Nuclear Safety Group within an operational nuclear power station.
- Understanding of the nuclear safety case, including its principles, purpose, and application within an operational environment.
- Ability to champion nuclear safety and confidently provide constructive challenge to colleagues, peers, and stakeholders.
- Strong relationship-building skills, with the ability to collaborate effectively across functions and organisations.
- Flexible and adaptable, able to work effectively in a dynamic project environment with changing priorities.
- Self-motivated, proactive, and able to take ownership of work within your area of responsibility.
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Desirable
- Knowledge and experience of nuclear physics within an operational or new-build context.
- Knowledge of the EPR design.
- Experience working on Sizewell C, Hinkley Point C, or another nuclear new-build project.
- Experience identifying and developing ideas and opportunities for improvement.
- Experience specifying requirements for and managing the delivery of safety-related projects.
- Project management experience, including work planning and budget management.
- Chartered Engineer/Physicist or equivalent professional status.
- Knowledge and understanding of reactor physics software.
Why Join Us?
- Be part of one of the most important low-carbon energy projects in the UK.
- Work in a mission-driven environment that values innovation, integrity, and long-term sustainability.
- Competitive salary, comprehensive benefits, and opportunities for career development.
- Flexible and hybrid working options.
Key Competencies
Behavioural Competences
-
Humility
- Recognise the value brought from different cultures and experiences
- Be open to other’s points of view and ideas, be willing to debate and to compromise
-
Positivity
- Positively challenge poor quality and performance
- Identify solutions at the lowest possible level
- Encourage tier 1s and others to bring new ideas forward
-
Respect
- Value the rules and environment in which we operate
- Give and receive feedback with respect
- Embrace and engage with new people and ideas
-
Solidarity
- One team, working closely together and helping each other
- Empowered teams always looking forward.
- Shared responsibility for delivering the project outcomes
-
Clarity
- Communicate clearly and consistently
- Promote collaboration and team alignment
- Clearer and faster decision making
- Drive simplification at all levels
If this sounds like the next step in your career, we’d love to hear from you. Apply today.
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