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LSEG

Senior Manager, Attack Monitoring (GSOC)

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The role leads a global, large and diverse 24x7 cybersecurity attack monitoring function, ensuring effective, timely detection and triage of security events across the enterprise.

The role is accountable for service effectiveness, ensuring that monitoring operations deliver high‑quality, actionable alerts and that case triage is consistent, timely, and aligned to risk.

Key Responsabilities

24x7 Monitoring Operations

  • Lead a globally distributed, follow‑the‑sun attack monitoring team

  • Ensure continuous coverage across regions with clear ownership, handovers, and operational discipline

  • Maintain service resilience, performance, and scalability of monitoring operations

Case Triage & Alert Management

  • Own the end‑to‑end triage process for security alerts

  • Ensure consistent prioritisation and classification of events based on risk and business impact

  • Drive improvements in triage quality, speed, and decisioning consistency

  • Act as escalation point for complex or high‑risk cases

Service Effectiveness & Performance

  • Define and manage service KPIs (e.g. triage time, alert backlog, escalation quality, false positives)

  • Monitor service performance and drive continuous improvement

  • Ensure alerts generated are actionable, relevant, and aligned with threat priorities

Operational Governance

  • Establish clear playbooks, triage standards, and operating procedures

  • Ensure adherence to processes across all regions and shifts

  • Provide regular reporting on service performance, risks, and improvement actions

Stakeholder & Incident Alignment

  • Work closely with Incident Response teams to ensure seamless escalation

  • Align monitoring outputs with threat intelligence and detection engineering

  • Provide clear operational insight to senior leadership during significant incidents

Leadership & Team Management

  • Lead, develop, and performance manage a global team of analysts and shift leads

  • Build a culture of accountability, consistency, and operational excellence

  • Ensure effective onboarding, training, and capability uplift across the team

Key Requirements

  • Strong experience leading Cyber Security Operations teams at scale

  • Proven track record in case triage and alert management

  • Ability to drive operational discipline across globally distributed teams

  • Experience managing service performance and KPIs

  • Clear communication skills across operational and senior stakeholders

Career Stage:

Manager

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

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.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.