Senior Offensive Security Researcher & Pen Test Lead

  • ActiveFence Ltd
  • 14/05/2026
Full time Information Technology Telecommunications Testing

Job Description

ActiveFence Ltd in the United Kingdom is seeking a Senior Penetration Tester to join their security research division. You will lead penetration tests on complex applications, engage in Red Team projects, and develop internal security tools. The ideal candidate has at least 5 years of experience in application security and web penetration testing, alongside the ability to produce technical reports. Candidates with offensive certifications and demonstrable achievements will be preferred. The role requires independence, attention to detail, and a proactive approach to research.