Senior Penetration Tester

Senior Penetration Tester

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 driving 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 thorough testing and teamwork.

Key Responsibilities

Conduct in‑depth penetration tests on applications, infrastructure, and cloud environments.

Take full ownership of assigned penetration testing engagements end‑to‑end and deliver with limited oversight.

Compile technical scoping documents, track and document assessment metadata.

Define engagement details (who, what, when, where).

Identify testing team members and roles.

Specify tools and methodologies used.

Schedule and timelines.