Sr. Network Engineer

Your Impact

Join us as aSenior Network Engineer (Firewall)based inCork, Ireland, where you will play a critical role in securing,operating, and evolvingenterprisegradenetworks acrossonpremisesand hyperscale cloud environments. With a strong focus onfirewalltechnologies, you will help protectmissioncriticalcommercial production systems while contributing to complex global network projects. This role offershandsonexposure to leadingfirewallvendors,largescaledeployments, and a collaborative global engineering culture.Opentexthas a security first, AI drivenway of workingmindset.

What the role offers

• Operate as a senior firewall SME within a global team, delivering secure, reliable firewall services across largescale onprem and cloud environments.
• Implement and manage enterprise firewall policies and IPSEC VPNs (primarily Check Point), ensuring secure connectivity and uninterrupted business operations.
• Execute daytoday operational work by owning JIRA tickets, applying firewall changes accurately and securely in line with enterprise standards and SLAs.
• Lead Tier 3 / Tier 4 incident response, driving complex troubleshooting and rootcause analysis to rapidly restore service during highseverity events.
• Contribute to firewall refresh, migration, and upgrade projects, participating across design, planning, implementation, and postchange validation to ensure successful outcomes.
• Collaborate with application, cloud, and security teams to design and deliver scalable, compliant, and defenceindepth security solutions.
• Automate and optimize firewall operations using APIs, scripting, infrastructureascode, and AIassisted tools to improve quality, consistency, and efficiency.
• Strengthen security posture by maintaining awareness of emerging threats, responding to critical CVEs, and embedding leastprivilege principles across all implementations.

What you need to succeed

• Minimum 5+ years of handson experience in enterprise firewall administration and configuration.
• Bachelor's degree in Computer Science, Engineering, IT, or equivalent professional experience.
• Excellent communication skills in English, able to engage confidently with technical and nontechnical stakeholders
• SMElevel expertise in at least one firewall platform, such as: Check Point, Palo Alto Networks, Fortinet, Cisco Firepower.
• Strong experience configuring and troubleshooting IPSEC VPNs
• Experience working in largescale enterprise network environments.
• Solid understanding of networking fundamentals:IP addressing, subnetting; Routing & switching; Packet capture and analysis; VPNs, load balancers, DNS .

Desirable / Additional Skills:

• Familiarity withCiscoSpineandLeafarchitectures.
• Experience withF5 BIGIP(LTM preferred).
• Exposure topublic cloud platforms(AWS, Azure, GCP).
• Experience with supporting tools and platforms such as: Infoblox, Citrix,NNMi
• Strong automation and scripting experience using Python, PowerShell, Ansible, or Terraform.
• Understanding ofITILalignedIncident, Change, and Problem Management.