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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.