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 qualified 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
- Engagement details (who, what, when, where)
- Testing team members and roles
- Tools and methodologies used
- Schedule and timelines
- Target systems and environments
- Constraints, 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 continuous improvement of testing methodologies, tooling, automation.
- Stay ahead of emerging threats, vulnerabilities, and offensive security techniques.
- Participate in R&D; initiatives as guided from leadership.
- Support educational sessions and mentoring within the team.
- Develop and maintain custom tools, scripts, and exploits to support testing activities.

Required Skills & Experience
- Validated hands-on experience in penetration testing of Web Applications, APIs, Thick Client and Common Infrastructures (Active Directory, Cloud and Cloud-native based environments).
- Proficiency with tools such as Burp Suite, common command-line tools, and ability to write custom scripts when

📌 Senior Penetration Tester (Bengaluru)
🏢 London Stock Exchange Group
📍 Bengaluru