security clearance; British Citizenship is required for this role. Preferred qualifications: Certifications in OSCE3, CRTP/CRTE, GIAC GCSA/Kubernetes-related, OSCP, OSCE, CRTO, CISSP, or GIAC (e.g., GPEN, GCTI, GWAPT). Experience designing or executing Purple Team exercises, combining offensive tactics with defensive feedback to drive continuous improvement. Experience with Kubernetes security, including secure cluster configuration, workload hardening More ❯
South East London, London, United Kingdom Hybrid / WFH Options
4SQUARE RECRUITMENT LTD
such as: CREST Certified Simulated Attack Specialist (CCSAS)/Certified Simulated Attack Manager (CCSAM) Offensive Security Certified Professional (OSCP) Certified Information Systems Security Professional (CISSP) SANS GIACPenetrationTester (GPEN) or Web Application PenetrationTester (GWAPT) Experience in mobile application (iOS/Android) testing, cloud security (AWS/Azure/GCP), or social engineering. Experience scripting in Python, PowerShell, or More ❯
Leeds, West Yorkshire, England, United Kingdom Hybrid / WFH Options
4Square Recruitment Ltd
such as: CREST Certified Simulated Attack Specialist (CCSAS)/Certified Simulated Attack Manager (CCSAM) Offensive Security Certified Professional (OSCP) Certified Information Systems Security Professional (CISSP) SANS GIACPenetrationTester (GPEN) or Web Application PenetrationTester (GWAPT) Experience in mobile application (iOS/Android) testing, cloud security (AWS/Azure/GCP), or social engineering. Experience scripting in Python, PowerShell, or More ❯
