Salary: £85,000 - 85,000 per year Requirements: We require at least 5 years of hands-on penetration testing experience across network, web, cloud, internal, red team, or purple team environments. We need excellent knowledge of MITRE ATT&CK. We need excellent knowledge of OWASP. We need excellent knowledge of threat modelling. We need excellent knowledge of attack surface analysis. We need experience with automated, dynamic, and static security testing tools. We need knowledge of regulatory frameworks including GDPR, PCI-DSS, and related compliance standards. Responsibilities: We will lead the scoping, planning, and execution of advanced penetration tests across web, network, cloud, and enterprise systems. We will conduct offensive security assessments to identify, validate, and exploit vulnerabilities while providing actionable remediation guidance. We will design and support purple team exercises to enhance detection and response capabilities. We will simulate advanced attack scenarios using frameworks such as MITRE ATT&CK. We will produce high-quality technical reports for both technical and non-technical stakeholders. We will mentor junior team members and promote security testing best practices. Technologies: Cloud Support Network OWASP Security Web More: We are a leading organisation growing our Cyber Security function and are seeking an experienced Senior Penetration Tester to join us in Horsham, with three days a week onsite. This is a senior role focused on delivering complex security assessments across networks, applications, cloud environments, and emerging technologies. We offer the opportunity to work on advanced offensive security, purple team exercises, and high-impact reporting within a collaborative team environment. The salary for this position is £90,000-£95,000. last updated 20 week of 2026