Penetration Tester £55,000 - 65,000 GBP Hybrid WORKING Location: Central London, Greater London - United Kingdom Type: Permanent Role: Pen Tester Location: London Salary: 55K - 65K Working Pattern: Hybrid The Opportunity: We are looking for an experienced Pen Tester to join a global Cyber Technical Services team that supports National Security, Defence, and Critical Infrastructure sectors. You will be responsible for delivering comprehensive security testing engagements, applying your expertise to safeguard vital systems. What You Will Do as a Pen Tester: Lead end-to-end security testing projects including scoping, execution, and reporting Conduct application, infrastructure, and intelligence-led tests to identify vulnerabilities Produce clear technical and non-technical reports for diverse stakeholders Ensure safe use of testing tools and develop improvements in scripts and techniques Collaborate with Threat Intelligence, Incident Response, and broader security teams to share knowledge What We Look For in a good Pen Tester: Proven experience in delivering security testing projects and understanding client risk mitigation needs Technical skills in adversary emulation, vulnerability discovery, and reverse engineering CHECK Team Leader status or equivalent certifications preferred Familiarity with scripting languages such as Python, C/C++, ASM desirable Flexibility to travel nationally and internationally Benefits: Competitive pension plan and employee share schemes Extensive health, wellbeing, and lifestyle benefits Inclusive culture valuing diversity and supporting career development Apply Now: To make a significant impact in cyber security, reach out directly to Ciaran Cleland on LinkedIn for a confidential conversation about the Pen Tester Role Reference: AMC/CCL/LPT Postcode: SE1 0NR cicl