Network Security Engineer
198729
Desired skills:
Network-security, Firewall-engineer, Network-segmentation, VPN-security, Incident-response, Traffic-analysis
Network Security Engineer
Location: Dublin
Type: Full-Time
Salary: €75,000 - €95,000
A security-focused technology environment is adding a Network Security Engineer to help own and protect core connectivity and perimeter services. This role sits close to day-to-day operations, combining hands-on troubleshooting with longer-term improvements to how network security controls are designed, maintained, and monitored.
It's a role for someone who understands how networks behave under load, during incidents, and when things don't fail cleanly.
The Role
You'll support and secure enterprise network infrastructure, with a strong focus on firewalls, network segmentation, secure connectivity, and traffic visibility. Expect a mix of operational support, change work, investigation, and collaboration with SOC and infrastructure teams when security events cross network boundaries.
What You'll Do
1. Operate and maintain network security controls (firewalls, VPNs, segmentation, gateways)
2. Investigate network-related security incidents and performance anomalies
3. Analyse traffic flows, logs, and packet captures to diagnose issues
4. Support firewall rule reviews, tuning, and lifecycle management
5. Work with SOC and IR teams during incidents affecting network layers
6. Assist with secure network design for new systems and services
7. Contribute to documentation, standards, and runbooks
8. Support change activity and continuous improvement initiatives
Skills & Experience
9. 4-7 years in network security or network-focused security engineering roles
10. Strong experience with enterprise firewalls and secure network architectures
11. Solid understanding of TCP/IP, routing, DNS, and network troubleshooting
12. Experience working with SIEM or network monitoring tools
13. Familiarity with cloud networking concepts (AWS or Azure)
14. Comfortable working in structured or regulated environments
15. Clear communication and a methodical troubleshooting approach
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