Senior Security Operations Analyst

Brookfield; Greater London; On-site; GBP 90,000 - 125,000; Full time

Job summary

Brookfield is seeking a Senior Security Analyst to support day-to-day security operations and respond to evolving priorities. You will lead investigations across Zscaler, Microsoft security tools, and email protection, while coordinating with Legal, Privacy and Compliance.

A strong focus on incident response, vulnerability management, and policy implementation is required. You will work in a fast-paced environment with on-call duties and cross-functional collaboration to improve security posture

Qualifications

• Five+ years in information security, security operations, or related discipline.
• Hands-on experience investigating security alerts and managing incidents.
• Experience with enterprise security technologies and policy changes.
• Experience with Zscaler, Defender XDR, Sentinel, Entra ID, Purview, or Exchange Online security controls.

Responsibilities

• Investigate and respond to security alerts from security platforms; document findings through resolution.
• Manage security incidents and service requests in ServiceNow with timely triage.
• Administer security controls across Zscaler and Microsoft security platforms.
• Review and tune email security controls including SPF, DKIM, DMARC.
• Lead on-call security events triage and escalation with stakeholders.
• Support AI security risk reviews and secure adoption of AI services.

Skills

Security operations

Incident response

Documentation and reporting

Stakeholder communication

Independent work

On-call readiness

Education

Post-secondary education in cybersecurity or related field

Tools

Zscaler

Microsoft Defender XDR

Microsoft Sentinel

Microsoft Entra ID

Microsoft Purview

ServiceNow

Job description

Brookfield is seeking a Senior Security Analyst to support day-to-day security operations and respond to evolving priorities. You will lead investigations across Zscaler, Microsoft security tools, and email protection, while coordinating with Legal, Privacy and Compliance.

A strong focus on incident response, vulnerability management, and policy implementation is required. You will work in a fast-paced environment with on-call duties and cross-functional collaboration to improve security posture