Senior Security Analyst (GIAC, SIEM)

at  360 Resourcing Solutions

SENIOR SECURITY ANALYST (GIAC, SIEM) – 12MTH FTC - £85,000

The Chaucer Group is a leading insurance group who help protect industries around the world from the risks they face. With UK headquarters in London, we also have international offices in Bermuda, Copenhagen, Dubai, and Singapore, and have doubled in size over the last four years.
We are seeking an experienced and strategic Senior Security Analyst (GIAC, SIEM) to join our team, with a strong emphasis on designing and enhancing our SIEM capabilities and security monitoring processes. This is an initial 12 month Fixed Term Contract but every chance of extension and going permanent.
As our new Senior Security Analyst (GIAC, SIEM), you will lead efforts to monitor and analyze security events and alerts generated by our Security Operations Centre (SOC), assess their severity, and determine the appropriate response. As a senior member of the team, you will collaborate with Tier 2 and Tier 3 engineers to coordinate incident triage and escalate critical issues.
The Senior Security Analyst (GIAC, SIEM) will be instrumental in creating and refining SIEM use cases, developing advanced alerting mechanisms, and establishing effective response procedures to optimize SOC operations. Additionally, you will actively monitor threat intelligence sources for emerging threats, provide expert security guidance on project teams, and manage vulnerability scanning tools to maintain and strengthen our organization’s security posture.
This role offers the opportunity to drive the continuous improvement of our threat detection and response capabilities, with a strong emphasis on refining security practices. Expertise in querying languages for SIEM policy development and advanced triage is highly desired for this position.

On a daily basis the Senior Security Analyst (GIAC, SIEM) will be responsible for:

• Oversee security events and alerts generated by the Security Operations Center (SOC).
• Perform initial analysis to determine severity of security events. First responder for alerts requiring immediate response and escalation. As senior analyst provide support where required for escalated incidents.
• Triage confirmed security events and alerts, in coordination with Tier 2 and Tier 3 network and infrastructure engineers, following documented procedures.
• Manage and create SIEM and SOAR custom correlation rules, dashboards, and reports. This will also include tasks like new data ingestion, normalization, rule deployment, and alert management.

This is a fantastic opportunity for an experienced Senior Security Analyst (GIAC, SIEM). You should have prior experience working within a Security Operations Centre and operating/building a SIEM/SOAR Platform. We use Crowdstrike here so previous experience would be useful. We are also looking for people who ideally are GIAC qualified.
On offer for the right Senior Security Analyst (GIAC, SIEM) is a highly competitive salary with unbelievable benefits. This role is largely remote with just 1 day a month in the office. Interested? Apply Now for an immediate Teams interview

• Oversee security events and alerts generated by the Security Operations Center (SOC).
• Perform initial analysis to determine severity of security events. First responder for alerts requiring immediate response and escalation. As senior analyst provide support where required for escalated incidents.
• Triage confirmed security events and alerts, in coordination with Tier 2 and Tier 3 network and infrastructure engineers, following documented procedures.
• Manage and create SIEM and SOAR custom correlation rules, dashboards, and reports. This will also include tasks like new data ingestion, normalization, rule deployment, and alert management