Senior Security Analyst — Security Operations Lead

Brookfield Asset Management; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Brookfield Asset Management is seeking a Senior Security Analyst to support day-to-day security operations and respond to evolving priorities. You will lead investigations across Zscaler, email security, and Microsoft security platforms, while administering access controls, vulnerability management, and third-party risk.

The role requires hands-on experience with MS Defender XDR, Sentinel, Entra ID, Purview, and related tools, plus strong incident response, documentation, and collaboration

Qualifications

• Five or more years in information security, security operations, or a related discipline.
• Hands-on experience investigating security alerts and managing incidents.
• Experience administering security platforms such as Zscaler, Microsoft Defender XDR, Sentinel, Entra ID, and Purview.

Responsibilities

• Investigate and respond to security alerts from monitoring platforms; document findings through resolution.
• Manage security incidents and service requests in ServiceNow; maintain queue health and stakeholder communications.
• Administer Zscaler services and Microsoft security controls; review logs and implement approved changes.

Skills

Security operations

Incident response

Zscaler

Microsoft Defender XDR

Microsoft Sentinel

Entra ID

PowerShell

Python

RBAC

AI security

Tools

ServiceNow

Exchange Online

Job description

Brookfield Asset Management is seeking a Senior Security Analyst to support day-to-day security operations and respond to evolving priorities. You will lead investigations across Zscaler, email security, and Microsoft security platforms, while administering access controls, vulnerability management, and third-party risk.

The role requires hands-on experience with MS Defender XDR, Sentinel, Entra ID, Purview, and related tools, plus strong incident response, documentation, and collaboration