Sr. Network Engineer (Firewall)

OpenText; Cork; On-site; EUR 90,000 - 130,000; Full time

Job summary

OpenText, The Information Company, is hiring a Senior Network Engineer (Firewall) in Cork, Ireland. You will secure, operate, and evolve enterprise networks across on‑premises and cloud environments, with a strong focus on firewall technologies and secure connectivity.

You will own firewall changes, manage IPsec VPNs, contribute to incident response, and collaborate with application, cloud, and security teams to deliver scalable, defence‑in‑depth security solutions while driving automation and

Qualifications

• Minimum 5+ years hands-on enterprise firewall administration experience.
• Bachelor's degree in Computer Science, Engineering, IT, or equivalent.
• Excellent English communication with technical and non-technical stakeholders.
• SME-level expertise in at least one firewall platform such as Check Point, Palo Alto, Fortinet or Cisco Firepower.
• Strong experience configuring and troubleshooting IPSEC VPNs.
• Experience in large-scale enterprise network environments.
• Solid networking fundamentals: IP addressing, routing, switching, VPNs, DNS.

Responsibilities

• Operate as a senior firewall SME within a global team delivering secure services across large on‑prem and cloud environments.
• Implement and manage enterprise firewall policies and IPSEC VPNs to ensure secure connectivity.
• Own day-to-day firewall changes via ticketing systems and SLAs with accurate, secure execution.
• Lead Tier 3/4 incident response, driving root-cause analysis to restore services quickly.
• Contribute to firewall refresh, migration, and upgrade projects across design, plan, and validation.
• Collaborate with application, cloud, and security teams to deliver scalable, defence‑in‑depth security solutions.
• Automate firewall operations using APIs, scripting, IaC, and AI-assisted tools.

Skills

Hands-on firewall administration

Enterprise networking

IPSEC VPNs

English communication

Cloud and on-prem networks

Education

Bachelor's degree in CS/Engineering/IT

Tools

Check Point

Palo Alto Networks

Fortinet

Cisco Firepower

Job description

Opentext - The Information Company

OpenText is a global leader in information management, where innovation, creativity, and collaboration are the key components of our corporate culture. As a member of our team, you will have the opportunity to partner with the most highly regarded companies in the world, tackle complex issues, and contribute to projects that shape the future of digital transformation.

AI-First. Future-Driven. Human-Centered.

At OpenText, AI is at the heart of everything we do—powering innovation, transforming work, and empowering digital knowledge workers. We're hiring talent that AI can't replace to help us shape the future of information management. Join us.

Your Impact

Join us as a Senior Network Engineer (Firewall) based in Cork, Ireland, where you will play a critical role in securing, operating, and evolving enterprise‑grade networks across on‑premises and hyperscale cloud environments. With a strong focus on firewall technologies, you will help protect mission‑critical commercial production systems while contributing to complex global network projects. This role offers hands‑on exposure to leading firewall vendors, large‑scale deployments, and a collaborative global engineering culture. Opentext has a security first, AI driven way of working mindset.

What The Role Offers

• Operate as a senior firewall SME within a global team, delivering secure, reliable firewall services across large‑scale on‑prem and cloud environments.
• Implement and manage enterprise firewall policies and IPSEC VPNs (primarily Check Point), ensuring secure connectivity and uninterrupted business operations.
• Execute day‑to‑day 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 root‑cause analysis to rapidly restore service during high‑severity events.
• Contribute to firewall refresh, migration, and upgrade projects, participating across design, planning, implementation, and post‑change validation to ensure successful outcomes.
• Collaborate with application, cloud, and security teams to design and deliver scalable, compliant, and defence‑in‑depth security solutions.
• Automate and optimize firewall operations using APIs, scripting, infrastructure‑as‑code, and AI‑assisted tools to improve quality, consistency, and efficiency.
• Strengthen security posture by maintaining awareness of emerging threats, responding to critical CVEs, and embedding least‑privilege principles across all implementations.

What You Need To Succeed

• Minimum 5+ years of hands‑on 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 non‑technical stakeholders.
• SME‑level 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 large‑scale 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 with Cisco Spine‑and‑Leaf architectures.
• Experience with F5 BIG‑IP (LTM preferred).
• Exposure to public 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 of ITIL‑aligned Incident, Change, and Problem Management.

OpenText's efforts to build an inclusive work environment go beyond simply complying with applicable laws. Our Employment Equity and Diversity Policy provides direction on maintaining a working environment that is inclusive of everyone, regardless of culture, national origin, race, color, gender, gender identification, sexual orientation, family status, age, veteran status, disability, religion, or other basis protected by applicable laws.

If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please contact us at [e-mail]. Our proactive approach fosters collaboration, innovation, and personal growth, enriching OpenText's vibrant workplace.