Description
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.
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.
- 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.
- Proficiency with tools such as Burp Suite, common command-line tools, and ability to write custom scripts when needed.
- Experience in automating pentesting tasks.
- Solid grasp of application security, network protocols, and operating systems.
- Experience with cloud platforms and containerized environments.
- Ability to write clear, technical reports and communicate findings to both technical and non-technical partners.
- Experience working in large, complex enterprise environments.
- Proficient communication skills in English, both written and verbal.
LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.