Cork OR Dublin Location - Hybrid 2 Days Onsite, 3 Days Remote
I'm currently partnering with a leading Irish organisation to hire a Network Security Lead. This is a key technical role responsible for strengthening perimeter, edge, and internal segmentation controls across complex on‑prem, cloud, and OT environments.
As the Network Security Lead, you'll take ownership of firewall architecture, engineering, and operations — ensuring high availability, secure remote access, effective segmentation, and strong integration with detection/response processes. You'll also provide day‑to‑day guidance to junior analysts and play a critical role in enabling secure change at pace.
Key Responsibilities
Design and maintain enterprise network security architecture aligned to Zero Trust
Lead firewall rule governance, policy lifecycle, and secure change management
Manage next‑gen firewalls (Palo Alto / Check Point), proxies, IDPS, PKI and VPNs
Troubleshoot complex network flows and ensure reliable high‑availability designs
Support cloud and hybrid connectivity (Azure Firewall, vNGFW, NSGs/ASGs)
Coordinate vulnerability scanning, patching, audits, and penetration testing
Contribute to incident response with rapid containment actions
Mentor junior analysts and collaborate with IT, cloud, and OT teams
Skills & Experience
5+ years in IT with strong network security/firewall engineering experience
Deep hands‑on expertise with Palo Alto and/or Check Point
Strong understanding of routing, NAT, VPNs, BGP, PKI, and segmentation
Experience with Azure networking and hybrid cloud environments
Strong troubleshooting, SIEM integration, and documentation skills
Knowledge of automation/IaC (API, Ansible, Terraform) is a bonus
If you believe you have the above experience and are interested in hearing more, then reach out to Killian O’Callaghan @Cpl Cork on 021 4944867 for a confidential conversation
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