Senior Attack Monitoring Analyst, GSOC in London

The London Stock Exchange Group seeks an experienced, dedicated and driven Senior Attack Monitoring Analyst to join the Global Security Operations team!

Role Summary

LSEG Security Operations is a central function employing people, process and technology to continuously monitor and respond to cyber security incidents. This role is responsible for identifying and responding to cyber security incidents and improving the defensive capabilities of the GSOC. The ideal candidate will have a solid technical background, with a firm understanding of modern attack techniques coupled with knowledge of the typical lifecycle of an attack.

Working Hours

This role is available in two locations: London and Singapore. Working hours will follow standard UK business hours (9:00 AM – 6:00 PM GMT) or Singapore hours (preferably 2:00 PM – 10:00 PM SGT). Singapore working hours are flexible and can be adjusted based on candidate availability.

Responsibilities

• Triage security events and employ a methodical and coherent response to security incidents adopting playbooks where necessary.
• Competently operate a chosen SIEM (e.g., Splunk/QRadar/LogRhythm) for incident investigations, or for the development of monitoring dashboards.
• Utilise playbooks, existing knowledge and accurate online resources for guidance when responding to incidents.
• Utilise online resources for researching and collecting threat intelligence to improve the SOC’s abilities to detect cyber‑attacks.
• Develop new, or improve existing run books and use cases based on investigations and knowledge of modern attacks.
• Stay up to date with current vulnerabilities, attacks, and countermeasures.
• Identify, respond and remediate cyber events generated through monitoring technologies.

Experience

• Preferred experience with operating or administrating a SIEM (e.g., Splunk/QRadar/LogRhythm).
• Solid understanding of networks including the TCP/IP stack, typical organisation architectures, and common protocols abused by malware.
• Experience in security event analysis & triage, incident handling and root‑cause identification.
• Understanding of tools, techniques and procedures that attackers use to compromise organisations, ideally from direct experience.
• Knowledge of cyber security either academically or within corporate environments.
• Ability to work in a fast‑paced and demanding environment while remaining calm.
• Strong verbal and written communication and collaboration skills.
• Security industry specific and core technical accreditations such as OSCP, GIAC, CCNA.
• Certification demonstrating SIEM operational competences.
• Proficient with one or more programming languages (e.g., Python, PowerShell, Java, C#).

Career Stage

Senior Associate

Equal Employment Opportunity Statement

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.