Network Engineer - Dublin

Title: Network Engineer (Critical Infrastructure)

We are seeking a skilled and resilient Network Engineer to support EdgeConneX' global enterprise infrastructure. This role is specifically designed for a networking professional who thrives in a mission-critical environment. You will be the primary point of contact for both local and remote sites' network health, focusing on our Cisco core, Building Management System (BMS) connectivity, and ensuring the absolute uptime required by our global customers.

The ideal candidate is not just a "Cisco expert" but someone who understands that in a data center, the network is the heartbeat of the facility. You must be comfortable troubleshooting complex issues under pressure in high-risk environments where downtime is not an option.

This position will report to EdgeConnex' Sr. Director, Network Engineering and Systems and is based at our Dublin datacenter. This role follows a four-day-per-week onsite schedule. This position could also require as much as 10-20% within the EMEA region to support critical issues and new builds.

Primary Responsibilities

• Cisco Infrastructure Management: Deploy, configure, and maintain a robust network environment with a heavy focus on Cisco Catalyst and Nexus switches.
• BMS & Critical Systems Networking: Provide dedicated support and administration for the Building Management System (BMS) secure network and its associated equipment. Ensure seamless communication between critical facility hardware and monitoring platforms.
• Data Center Uptime: Maintain a "Zero Downtime" mindset. Monitor and optimize network performance to meet strict SLA requirements and high-availability standards.
• On-Site Operations Support: Act as the local technical lead for the operations team, resolving all network-related issues, including WiFi, local LAN, WLAN segments, and troubleshooting.
• Troubleshooting Under Pressure: Rapidly diagnose and resolve network outages or performance degradation in a high-risk environment. You must be able to maintain composure and follow strict Change Management protocols while under pressure.
• Virtualization Integration: Collaborate with the broader IT team to manage network connectivity for our Virtualization infrastructure (VMware/vSAN), ensuring high-speed, redundant paths for server traffic.
• Documentation: Maintain precise network diagrams, IP schemes, and cable maps for both the enterprise and BMS networks.

Knowledge, Skills & Abilities

• Advanced Networking: Expert-level command of Cisco NX-OS/IOS. Experience with VLAN segmentation, routing protocols, and firewall management.
• DC Virtualization: Deep experience with VMware (ESXi, vCenter). Knowledge of vSAN or similar software-defined storage is a plus.
• Storage Protocols: Proficiency in managing storage via iSCSI, Fibre Channel, or NFS.
• Resilience: Proven ability to work in a 24/7/365 mission-critical environment. You must be comfortable with on-call rotations and emergency response.

Experience/Education

• Cisco Expertise: Deep hands-on experience with Cisco IOS, NX-OS, Catalyst, and Nexus platforms.
• BMS Affinity: Strong understanding of how industrial control systems (BMS/EPMS) utilize IP networks.
• Critical Environment Experience: Proven ability to work within a Tier III or IV data center environment, understanding the risks associated with "live" infrastructure.
• Infrastructure Knowledge: Familiarity with Data Center/Virtualization stacks (VMware, SAN/NAS connectivity).
• Resilience: Demonstrated ability to troubleshoot and resolve complex issues in high-demand and time-sensitive situations.
• Proficiency in administering VMware, Windows and/or Linux server environments is a plus

Qualifications

• Experience: 5+ years of professional experience as a Network Engineer, preferably within a Data Center, ISP, or critical industrial environment.
• Education: Bachelor's Degree in Computer Science, Network Engineering, or a related technical field (or equivalent professional experience).
• Certification: CCNA/CCNP (Routing & Switching / Data Center) is highly preferred.
• Availability: Ability to participate in an on-call rotation to support 24/7/365 data center operations.