Cyber Operations Manager (Sizewell C)

EDF Energy Limited; Greater London; Hybrid; GBP 70,000 - 94,000; Full time

Benefits offered by this job

Annual leave 28-30 days + holidays

5% annual bonus

Pension contributions: employee up to

7.5% employee / 15% employer

Job summary

EDF Energy Limited in London is seeking an experienced Cyber Operations Manager to oversee day-to-day cyber security operations within a highly regulated and safety-critical environment.

You will lead security monitoring, threat detection, vulnerability management, and incident response, working with Cyber Security, Infrastructure and third-party providers to protect critical systems and data.

Qualifications

• Proven experience managing cyber security operations or security operations teams within large, complex organisations.
• Experience managing third-party cyber security providers and operational service delivery.
• Knowledge of cyber security frameworks such as NIST, ISO27001, CIS, or IEC 62443.
• Strong leadership, stakeholder management, and communication skills.
• Ability to manage competing priorities within high-pressure operational environments.

Responsibilities

• Oversee day-to-day cyber security operations within a highly regulated environment.
• Manage security monitoring, threat detection, vulnerability management, and incident response coordination.
• Collaborate with Cyber Security, Infrastructure, Digital, OT and third-party providers to ensure effective cyber security controls.

Skills

Cyber security operations

Leadership

Stakeholder management

Communication

Prioritization under pressure

Tools

SIEM

Endpoint security

Threat detection

Incident response

Vulnerability mgmt

Network security

Job description

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Cyber Operations Manager
Sizewell C

Location: Based in London on a hybrid basis with travel to Suffolk as required.
Contract: Permanent, full-time.
Salary: £82,000 per annum, dependant 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.
Closing Date: Sunday 20th September 2026

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.

About the Role

We are seeking an experienced Cyber Operations Manager to oversee day-to-day cyber security operations within a
highly regulated and safety-critical environment.

You will be responsible for managing security monitoring, threat detection, vulnerability management, incident response coordination, and operational cyber resilience activities across the organisation. Working closely with Cyber Security, Infrastructure, Digital, Operational Technology, and third-party providers, you will ensure that cyber security controls and services operate effectively to protect critical systems and data.

This role offers the opportunity to contribute to a nationally significant infrastructure programme where operational resilience and cyber defence are essential.

About You

Proven experience managing cyber security operations or security operations teams within large, complex organisations
Experience managing third-party cyber security providers and operational service delivery
Knowledge of cyber security frameworks such as NIST, ISO27001, CIS, or IEC 62443
Strong leadership, stakeholder management, and communication skills
Ability to manage competing priorities within high-pressure operational environments

Strong understanding of:

Security Operations Centre (SOC) processes and technologies
SIEM, endpoint detection, and security monitoring platforms
Threat detection, threat intelligence, and incident response
Vulnerability management and cyber hygiene practices
Network, infrastructure, cloud, and endpoint security
Cyber security operational governance and risk management

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.

Why Join Us?

For more than 60 years, nuclear power stations in the UK have been quietly keeping Britain fuelled with massive amounts of home-grown energy.

Our teams up and down the country are proudly continuing to serve the nation - but they also have an eye on the future.

EDF is leading the UK's nuclear renaissance with the construction of a new nuclear power station at Hinkley Point C and plans for a new power station at Sizewell C in Suffolk.

Nuclear power is the most reliable, low-carbon energy source currently available to the UK. EDF is playing a key role in the development of nuclear sites, while Hinkley Point C will provide low-carbon electricity to meet 7% of the UK demand. The project is already making a positive impact on the local and national economy as well as boosting skills and education.

We're not just building new nuclear power stations. We're developing careers, upskilling generations and creating thousands of employment and apprenticeship opportunities across a variety of skills areas.

It takes a special kind of person to work in the nuclear energy industry and although we have thousands of them there's always a need for more.

Our industry has a mind-boggling range of opportunities and more jobs, and in more places, than you might think. But it's also an industry which is changing.

We're a responsible business and proud to be Britain's biggest generator of zero carbon electricity. With size, age and experience, we believe we can do even more.