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IT Security Operations Engineer

Posted 18/03/2026

Negotiable

Dublin

Permanent

IT & Digital

Job Description

Cyber Security Engineer
Location: On-site
Type: Permanent

A well established organisation is looking for a Cyber Security Engineer to join its on-site IT function. This role sits within security operations and will suit someone who enjoys a hands-on mix of monitoring, incident response, Microsoft 365 security, vulnerability management, hardening, and operational security improvement.

You'll be involved in investigating security events across on-prem, cloud, and hybrid environments, supporting remediation activity, improving controls, and helping drive strong day-to-day cyber operations across the business.

What you'll be doing:

  • Monitoring and investigating security events across SIEM, EDR/XDR, AV, Microsoft 365 security tools and wider infrastructure

  • Responding to incidents, carrying out root cause analysis, and supporting containment and remediation

  • Managing and improving Microsoft security controls across Defender, Conditional Access, MFA, Entra ID, identity protection and device compliance

  • Tracking vulnerabilities through to closure and supporting patching, hardening, and baseline enforcement

  • Supporting governance, risk, and compliance activity including policy improvement, audit evidence, and risk assessments

  • Working within ITIL-aligned incident, problem, change, and request processes

  • Producing clear SOPs, runbooks, procedures, and operational documentation

  • Working with network teams on firewalls, VPNs, proxies, segmentation, and network security reviews

What they're looking for:

  • 5+ years in cyber security engineering or operations

  • Strong experience across Microsoft 365 security technologies including Defender, Conditional Access, MFA, and Entra ID

  • Hands-on exposure to SIEM, EDR/XDR, vulnerability management, patching, and cloud security

  • Good understanding of incident response, threat investigation, and operational security processes

  • Experience with PowerShell or Python for scripting and automation

  • Solid grounding in network security concepts including firewalls, VPNs, IDS/IPS, DNS, and TCP/IP

  • Familiarity with ISO27001, GDPR, and audit or compliance support

  • Strong communication skills, documentation standards, and a methodical approach

Desirable certifications:
CISSP, CISM, CEH, SC-200, SC-300, SC-400, AZ-500, MS-102, ITIL Foundation

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