Senior Security Specialist

LSEG (London Stock Exchange Group) is a global financial markets infrastructure and data business. We are dedicated to delivering open‑access financial services that support stability and growth worldwide.

Job Profile

Plan and execute security testing operations across the enterprise. Work closely with Business partners, BISOs, GSOC, and other entities to ensure the Group’s security program is effectively tested and potential gaps discovered.

Responsibilities

• Plan, lead and execute offensive security engagements as a threat actor during tests, attack simulations, training and exercises
• Employ simulated adversary threat‑based approaches to expose and exploit vulnerabilities and weaknesses to improve the security of our products and technology landscape
• Replicate tactics, techniques and procedures used by modern attackers, including common network exploitation, penetration techniques ...