L3 SOC Analyst

Company: Realtime Recruitment Limited
Apply for the L3 SOC Analyst
Location: Northern Ireland
Job Description:

Key Requirements



  • Strong L3 SOC / Security Operations experience within a commercial environment.

  • Proven experience with SIEM onboarding, configuration, tuning, optimisation and use-case development.

  • Strong Security Monitoring, Incident Response and Threat Intelligence experience.

  • Experience performing advanced event and incident analysis, including baseline and trend analysis.

  • Commercial experience in Penetration Testing and/or Security Monitoring.

  • Experience providing technical leadership, mentoring and guidance to L2/L3 SOC analysts.

  • Strong understanding of networking, infrastructure, operating systems and security architecture.

  • Experience across Windows, Linux and/or Mac system administration.

  • Experience supporting Major Incident Response, including threat identification, containment and remediation.

  • Ability to communicate complex security issues effectively to technical and non-technical stakeholders.

  • Active SC Clearance or ability to obtain SC Clearance.


Key Technical Skills



  • SIEM: Microsoft Sentinel, IBM QRadar, LogRhythm

  • Microsoft Security: Microsoft Defender for Endpoint, Microsoft Defender for Identity and Cloud

  • Microsoft Sentinel: KQL, use-case development, detection rules, workbooks, playbooks

  • SOAR: Logic Apps and security automation

  • MSSP / Multi-Tenant: Microsoft Sentinel Lighthouse, multi-customer environments and DevOps

  • Threat Intelligence: Open-source and commercial intelligence

  • Security Monitoring: Alert analysis, detection engineering, rule creation, tuning and optimisation

  • Incident Response: Advanced investigation, containment, remediation and Major Incident Response

  • Infrastructure: Networking, operating systems and infrastructure design

  • Log Management: Log-source assessment, parsing, onboarding and monitoring

  • Automation: SOAR, playbook development and process improvement


Certifications


Relevant industry certifications are highly desirable, including:



  • CompTIA Network+

  • CompTIA Security+

  • CompTIA CySA+

  • CISMP

  • CISSP

  • Other relevant SOC, SIEM, Cyber Security or Protective Monitoring certifications


Must hold UK, EU or Irish passport – Must be in Belfast – this is a hybrid role 2 days per week

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Posted: October 12th, 2026