GCS
IT Security Operations Engineer
GCSIreland10 hours ago
Full-timeRemote FriendlyInformation Technology

I'm looking for an IT Security Operations Engineer to support security monitoring, incident response, vulnerability management, and Microsoft 365 security across a hybrid cloud/on‑prem environment. This is a hands‑on operational role working closely with IT, cloud, and network teams to maintain a secure and compliant environment.


Key Responsibilities

  • Monitor and investigate security alerts across SIEM, EDR/XDR, and Microsoft security platforms.
  • Respond to incidents, perform root‑cause analysis, and implement remediation.
  • Track CVEs and coordinate vulnerability remediation across endpoints, servers, and cloud services.
  • Manage and optimise Microsoft 365 security (Defender suite, Conditional Access, MFA, Entra ID).
  • Improve Secure Score, compliance dashboards, and overall cloud security posture.
  • Support identity and access governance activities.
  • Contribute to hardening, patching, and baseline enforcement.
  • Support ISO27001, GDPR, and internal compliance initiatives.
  • Provide audit evidence and maintain security documentation, SOPs, and runbooks.
  • Work within ITIL processes including Incident, Problem, Change, and Request Management.
  • Assist network teams in securing firewalls, VPNs, proxies, and reviewing security configurations.


Required Experience

  • 5+ years in security operations or cyber engineering.
  • Strong hands‑on experience with SIEM, EDR/XDR, vulnerability management, and Microsoft 365 security.
  • Solid understanding of network security (firewalls, VPNs, IDS/IPS, DNS, TCP/IP).
  • PowerShell or Python scripting experience.
  • Knowledge of ITIL processes.
  • Degree in IT, Computer Science, or similar (or equivalent experience).


Preferred

  • Certifications such as CISSP, CISM, CEH, SC‑200/300/400, AZ‑500, MS‑102, ITIL Foundation.
  • Experience in regulated or security-mature environments.
  • Exposure to cloud-first and identity-driven security models.

Key Skills

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