Senior Penetration Tester

• Deliver high-quality penetration tests across infrastructure, web applications, APIs, cloud platforms, and internal systems
• Lead and scope complex testing engagements, ensuring alignment with regulatory and internal security requirements
• Provide clear, actionable reporting and remediation guidance to technical and non-technical stakeholders
• Support threat-led testing initiatives and contribute to red team or purple team exercises where required
• Collaborate with engineering, architecture, and security teams to improve defensive controls and detection capabilities
• Mentor junior testers and contribute to the development of internal methodologies, tooling, and best practices
• Stay current with emerging threats, vulnerabilities, and offensive security techniques relevant to financial services

• 5+ years of penetration testing experience, with significant exposure to financial services environments
• Strong technical expertise across infrastructure, application, and cloud penetration testing
• Experience working within regulated environments and familiarity with frameworks such as PCI DSS, ISO 27001, NIST, or CBEST/TIBER
• Ability to communicate complex technical findings clearly and confidently to senior stakeholders
• Hands-on experience with common offensive security tools, custom tooling, and manual testing techniques
• Relevant certifications such as CCT INF, CRT, OSCP, OSCE, CRTO, or equivalent (highly desirable)

• Opportunity to join a growing, well funded security function within a leading financial institution
• Exposure to complex, large scale environments and high impact testing engagements
• Strong career progression pathways, including leadership, red team, or specialist technical tracks
• Competitive salary, benefits, and professional development support

Opus are working with a leading financial services institution that are expanding its internal Penetration Testing function and is seeking an experienced Senior Penetration Tester. This is an opportunity to join a growing, highly skilled team responsible for delivering high impact security testing across complex, regulated environments.