Senior Security Specialist – Penetration Testing

LSEG is seeking a  Senior Penetration Tester to join our internal offensive security team. This role is hands-on and deeply technical, responsible for planning and executing penetration tests across a wide range of systems and applications. The successful candidate will be a skilled offensive security professional with a passion for uncovering vulnerabilities and improving security posture through rigorous testing and collaboration.

• Conduct in-depth penetration tests on applications, infrastructure, and cloud environments.
• Take full ownership of assigned pentesting engagements end-to-end and deliver with limited oversight.
• Compile technical scoping documents, track and document assessment metadata
• Engagement details(who, what, when, where)
• Testing team members and roles
• Tools and methodologies used
• Schedule and timelines
• Target systems and environments
• Constraint Senior Security Specialist – Penetration Testing
• s, exclusions, and limitations
• Testing activities and event logs
• Document findings clearly and concisely, providing actionable remediation guidance.
• Collaborate with application teams to scope, execute, and report on security assessments.
• Contribute to team improvement efforts and ensure all initiatives and feedback are well documented for future references.
• Contribute to the continuousimprovement of testing methodologies, tooling, automation.
• Stay current with emerging threats, vulnerabilities, and offensive security techniques