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Penetration Tester - UK @ Oscar Associates Limited

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About this role

Salary: £50,000 - 50,000 per year

Requirements

  • Active SC clearance
  • Current CHECK Team Member status
  • Proven experience delivering penetration testing engagements
  • Knowledge of infrastructure, web application, and cloud security testing
  • Strong report writing and communication skills
  • Excellent understanding of common vulnerabilities, attack techniques, and security best practices
  • Willingness to travel to client sites occasionally

Responsibilities

  • Deliver CHECK penetration testing engagements across client environments
  • Conduct infrastructure, web application, cloud, and Active Directory security assessments
  • Identify vulnerabilities and provide practical remediation advice
  • Produce clear, high-quality technical reports for clients
  • Support and collaborate with a wider team of cyber security consultants on varied projects
  • Maintain testing activities in line with NCSC CHECK methodologies

Technologies

  • Active Directory
  • Cloud
  • Support
  • Security
  • Web

More

We are a growing UK cyber security consultancy delivering penetration testing services to government and public sector organisations. This is a permanent, full-time remote role based in the United Kingdom, with around 90% remote working and occasional on-site client visits; all travel expenses are covered. We offer a salary of £40,000 - £50,000 depending on experience, fully expensed client visits, and a company pension scheme. This is a great opportunity for an experienced penetration tester who wants to work on a broad range of challenging engagements.

last updated 46 week of 2026

Skills

Active Directorycloud security testingPenetration Testingsecurity assessmentremediation adviceNCSC CHECK methodologiesReport writingCommunication

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