Nuclear Safety Engineer (Sizewell C)

Nuclearinst; Leiston; Hybrid; GBP 60,000 - 74,000; Full time

Benefits offered by this job

Annual leave 28 days + bank holidays

5% annual bonus

Defined Contribution Pension up to 7.5

Life Assurance up to 8 x salary

Job summary

Nuclearinst is seeking a Nuclear Safety Engineer for Sizewell C on a permanent, full-time basis. The role will help establish pre-operational safety arrangements and bridge the nuclear safety case with the future operator.

You will collaborate with stakeholders across Sizewell C locations, ensure regulatory compliance, support the safety case, and contribute to a small, resilient Nuclear Safety team as the pre-operations programme progresses.

Qualifications

• Degree in engineering or related discipline.
• Understanding of nuclear reactor physics and regulatory requirements.
• Strong technical understanding of nuclear power plant operations, ideally PWR.
• Ability to champion nuclear safety and provide constructive challenge.
• Experience with Sizewell C or other nuclear projects (preferred).

Responsibilities

• Develop and deliver activities within the pre-operational nuclear safety strategy.
• Provide nuclear safety expertise to support the future Sizewell C operating organisation.
• Contribute to the development and application of the nuclear safety case.
• Represent the interests of the future operator across the pre-operations function.

Skills

Nuclear safety expertise

Nuclear reactor physics

Stakeholder collaboration

Flexible working

Self-motivated

Education

Degree in engineering or related discipline

Tools

Reactor physics software

Job description

The Sizewell C Jobs Service supports local people into exciting, long-term careers across our Project.#SZCJobs

Nuclear Safety Engineer
Sizewell C

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: 15th 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 aNuclear 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 ofcooling, controlling and containing the coreare upheld. You will also help demonstrate compliance with national and international regulatory requirements.

Reporting to the Nuclear Safety Manager, you will join thePre-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.

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 an 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.

Desirable

• Knowledge and experience of nuclear physics within an operational or new-build context.
• Knowledge of theEPR design.
• Experience working onSizewell 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.

For this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.