Salary: £70,000 - 80,000 per year Requirements: Minimum 5 years experience leading penetration tests across network, web, cloud, and red/purple team engagements Strong knowledge of penetration testing tools, techniques, and methodologies In-depth understanding of MITRE ATT&CK framework and adversarial TTPs Proven ability to identify, validate, and clearly articulate vulnerabilities and risk Experience producing high-quality reports with clear remediation guidance Knowledge of OWASP and application security principles Experience with automated, dynamic, and static security testing tools Ability to perform threat modelling and attack surface analysis Experience working with or managing third-party security providers Relevant certifications such as OSCP, CREST, SANS, CRTO or equivalent experience Responsibilities: Lead the scoping, planning, and delivery of complex penetration tests across networks, applications, cloud, and emerging technologies Conduct advanced offensive security assessments, identifying and exploiting vulnerabilities with clear remediation guidance Collaborate with defensive teams to design and execute purple team exercises to enhance detection and response capabilities Produce high-quality reports tailored to both technical and non-technical stakeholders Support vulnerability validation and provide technical expertise during incident response activities Mentor junior testers, promoting best practices and continuous team development Peer review testing methodologies and reports to ensure quality and consistency Stay current with evolving threats, tools, and techniques to improve overall security posture Contribute to secure development lifecycle (SDLC) security testing practices Support adherence to regulatory and industry standards including GDPR, PCI-DSS, and FCA guidance Technologies: Cloud Support Network OWASP Security Web More: We at VIQU are excited to partner with a leading organization in the search for a Senior Penetration Tester. This is a hybrid, permanent position based in Horsham, offering a competitive salary. In this crucial role, you will protect business assets through the delivery of advanced offensive security services. You will lead complex engagements across varied environments while also working closely with our defensive teams. Join us to help translate business risk into actionable security improvements within a mature Cyber Defence function. last updated 18 week of 2026