Senior Network Engineer.

eir Ireland; Dublin; On-site; EUR 85,000 - 110,000; Full time

Job summary

eir Business is seeking a Senior Network Engineer to join our Managed Services team, supporting a key enterprise customer. The role centers on resolving complex network and security incidents, optimizing environments, and ensuring reliable service delivery.

You'll work with Palo Alto firewalls, Aruba WLAN, Cisco LAN/WAN, and VPN technologies, following ITIL-based incident and change processes. The position offers on-call rotation and opportunities to drive continuous improvement within a

Qualifications

• 5+ years networking experience.
• Strong Palo Alto firewall experience.
• Experience with Aruba networking.
• Strong routing & switching skills (OSPF, TCP/IP, VLANs).
• VPN technologies (IPSec, remote access).
• ITIL / managed services experience.

Responsibilities

• Act as senior escalation for network/security incidents
• Lead root cause analysis and resolution
• Manage Palo Alto firewalls (policy, NAT, VPNs)
• Support Aruba switching, controllers, and Wi-Fi
• Support LAN/WAN/WLAN environments
• Perform changes, upgrades, and migrations
• Follow ITIL processes and maintain documentation
• Participate in on-call rota and major incident response

Skills

Networking expertise

Troubleshooting

Communication skills

ITIL familiarity

Tools

Palo Alto

Aruba

Cisco LAN/WAN

VPN technologies

Job description

Role Title

Senior Network Engineer

Business Area

Service Operations

About This Role

Eir Business is seeking a Senior Network Engineer to join our dedicated Managed Services team supporting a key enterprise customer. This is a senior technical role acting as an escalation point, responsible for resolving complex network and security incidents, optimising environments, and ensuring reliable service delivery.

Experience with networking and security concepts is essential, with particular focus on Palo Alto, along with hands-on exposure to technologies such as Aruba WLAN, Cisco LAN, WAN, WLAN and network security platforms. A proactive approach to continuous improvement and the ability to operate within ITIL-based incident and change management processes are key to success in this role:

eir Business is the B2B division of eir and one of Ireland's leading providers of telecommunications, technology, cloud, cybersecurity, managed IT and workplace solutions. Supporting organisations of all sizes, from SMEs to large enterprises and public sector bodies, eir Business delivers secure, end-to-end connectivity and digital transformation services that help customers operate more efficiently, securely and effectively. Leveraging Ireland's largest mobile network, extensive fixed-line infrastructure, cloud capabilities and 24/7 expert support, eir Business partners with customers to design, implement and manage technology solutions that enable innovation, productivity and business growth.

Expectations From The Role

• Act as senior escalation for network/security incidents
• Lead root cause analysis and resolution
• Manage Palo Alto firewalls (policy, NAT, VPNs)
• Support Aruba switching, controllers, and Wi-Fi
• Support LAN/WAN/WLAN environments
• Perform changes, upgrades, and migrations
• Follow ITIL processes and maintain documentation
• Participate in on-call rota and major incident response

Requirements For A Successful Application

• 5+ years networking experience
• Strong Palo Alto firewall experience
• Experience with Aruba networking (switching/wireless)
• Strong routing & switching skills (OSPF, TCP/IP, VLANs)
• VPN technologies (IPSec, remote access)
• ITIL / managed services experienceStrong troubleshooting skills

Desirable Skills

• Cisco CCNA/CCNP
• Palo Alto certs (PCNSE/PCNSA)
• Aruba certs
• Cloud networking (Azure/AWS)
• SD-WAN exposure

Key Competencies

• Strong problem-solving
• Ability to work in high-pressure environments
• Excellent communication skills
• Customer-focused mindset

Others

About Eir

Our purpose is to connect for a better Ireland.

Our ambition is to be the number one choice for telecommunications and technology solutions, delivering for our customers today and into the future.

Our new values and behaviours reflect both who we are and who we strive to become. They are the way that we bring our purpose to life in eir.