EO Security Support Officer


Company:	Government Recruitment Service
Salary:	£35,479 to £37,121 a year
Hours:	Full-time
Location:	London
Job type:	Permanent
Posting date:	9 Oct 2026
Closing date:	18 Oct 2026

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Summary

The Cabinet Office supports the Prime Minister and ensures the smooth running of government, from developing policy, to modernising public services. Within the Cabinet Office, the Security & Resilience (COSR) Team is the lead body for managing protective security, advising business units, and mitigating security threats across the department.

We are recruiting a dynamic EO Security Support Officer to work across our Security operations. To build departmental resilience and offer a rich learning experience, the successful candidate will rotate periodically across three high-performing and essential security teams:

Vetting Team: Responsible for overseeing National Security Vetting (NSV) across the Cabinet Office, ensuring compliance with NSV policies and working closely with UK Security Vetting (UKSV) and the Government Security Group (GSG).
STRAP Team (STRAPSO): Regulates and monitors access to highly sensitive intelligence material that requires specialised protective handling beyond standard government arrangements.
Incident Management Team: Managing security incidents, assessing risks, analysing data and where necessary, escalating incidents and emerging threats to the correct team or stakeholder.

As a security Support Officer, your duties will include:

Managing team inboxes, operational tracking systems, and taking on-call or out-of-hours responsibilities as required.
Administering National Security Vetting (NSV) applications, transfers, and clearance processes, ensuring accuracy and complete records.
Verifying candidate and stakeholder information to maintain the integrity of vetting databases, as well as managing the vetting aftercare and leavers' processes.
Providing administrative control of environments, maintaining accurate security records, and managing access to secure meeting rooms and video-conferencing facilities.
Managing user accounts, secure telephony, and access applications for classified IT systems across the Cabinet Office and No. 10.
Delivering clear technical training, security briefings, and familiarisation sessions to colleagues of all grades.
Supporting hardware and software projects, capturing user requirements, and tracking project delivery.
Investigating, recording, and reporting security incidents or breaches to the wider security team with constructive recommendations.

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