Full-Time

Security Controller

Updated on 9/4/2026

Zaizi

Zaizi

51-200 employees

Designs secure digital government services

No salary listed

Cheltenham, UK

Hybrid

Hybrid working is available.

UK Citizenship, UK Top Secret Clearance Required

Category
Security & Protective Services
Required Skills
Agile
Incident Response
AWS
Google Cloud Platform

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Requirements
  • Must be a British National.
  • Proven experience as a Security Controller or Deputy within a United Kingdom Defence or National Security List X environment.
  • Deep understanding of the Security Policy Framework, Cabinet Office security controls, and List X requirements, specifically FSA/IV.
  • Active enhanced Developed Vetting clearance.
  • Meticulous record-keeping skills for musters, visitor logs, and classified document registers.
Responsibilities
  • Act as the officially appointed Security Controller responsible to the Board for all day-to-day security aspects.
  • Manage the receipt, storage, distribution, and disposal of classified documents and assets in accordance with government standards.
  • Prepare for and manage external audits from MOD Defence Equipment & Support and other accreditors.
  • Maintain the Security Risk Management and Company Security Instructions.
  • Complete yearly Crypto audits and related filings.
  • Manage strict facility access-control systems, including vetting and escorting visitors, contractors, and international guests in compliance with International Visits Control Office protocols.
  • Oversee the lifecycle of United Kingdom Security Vetting and other clearances for staff and associates.
  • Conduct initial security briefings for new hires and ongoing aftercare duties.
  • Ensure staff understand their responsibilities under the Official Secrets Act and the Security Policy Framework.
  • Monitor and mitigate insider threats, conduct risk assessments, and liaise with Human Resources and line management regarding staff reliability.
  • Serve as the primary point of contact for government security officials.
  • Lead the investigation and reporting of security breaches or incidents to the relevant Contracting Authority and the Industry Security Assurance Centre.
  • Advise the Board and Senior Leadership Team on security implications of new contracts, office moves, or changes in company ownership or structure.
  • Collaborate with the IT Manager to align physical and cyber security measures and support successful implementation of ISO standards.
  • Support the bid team by providing security capability statements for tenders requiring facility clearances.
Desired Qualifications
  • DISA or SyI membership, or equivalent professional security qualifications such as a BTEC Level 3 in Security Management.
  • Experience liaising with the International Visits Control Office for overseas visits and classified exchanges.
  • Experience establishing a new List X facility from scratch.

Zaizi helps public sector organisations realise their potential by designing, building, and sustaining secure digital services with a strong focus on user needs. The core product is a full delivery approach: understanding what citizens and staff require, creating user-friendly digital services, developing them securely, and providing ongoing maintenance so services stay reliable over time. Zaizi differentiates itself by concentrating on the public sector and offering end-to-end delivery—from initial design through development to long-term support—so digital government projects can succeed. The company’s goal is to make public services easier to use and more efficient, helping governments deliver better experiences for citizens.

Company Size

51-200

Company Stage

N/A

Total Funding

N/A

Headquarters

London, United Kingdom

Founded

2007

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Simplify Jobs

Simplify's Take

What believers are saying

  • Zaizi's August 10, 2026 accounts signal continued operating scale and compliance.
  • Zaizi is hiring nine roles as of August 23, 2026.
  • Border Force and Zaizi won Security Excellence Awards shortlist recognition in February 2026.

What critics are saying

  • Companies House filed Antony Enright's director termination on June 30, 2026.
  • Zaizi's NHS SBS advisory framework expires in March 2026, pressuring renewal volume.
  • Government dependence creates existential risk if Border Force and defense contracts stall.

What makes Zaizi unique

  • Zaizi built ScanApp with UK Border Force, digitizing freight clearance.
  • Zaizi launched Spearhead on July 17, 2026, packaging vetted UK sovereign SMEs.
  • Zaizi targets government, national security, and defense delivery with UK-cleared teams.

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Benefits

Health Insurance

Life Insurance

Paid Vacation

Paid Holidays

Hybrid Work Options

Home Office Stipend

Professional Development Budget

Training Programs

Mentorship Program

Commuter Benefits