Top Network Engineer Jobs in Belfast

Design, configure, and maintain secure, scalable enterprise networks; administer Citrix NetScaler VPX; develop Ansible playbooks for automation; monitor and troubleshoot LAN/WAN/cloud networking, L4-L7 traffic, and routing (BGP/OSPF/VXLAN); document configurations and support infrastructure projects.

As a Junior Network Engineer, you will implement, maintain, and troubleshoot network and security aspects, working closely with a global team to support infrastructure.

Design, maintain, and optimize HLR/HSS/UDM subscriber templates and roaming logic. Lead Full MVNO profile deployments, collaborate with roaming partners and system integrators, define HLR/HSS KPIs, and troubleshoot signalling using Wireshark and roaming platforms.

Build and design proxy infrastructure from scratch, implement rotation systems, manage IP reputation, optimize for performance, and develop reverse proxy systems for various proxy types.

The Network Operations Engineer III monitors and supports network infrastructure, ensuring service levels are met, troubleshooting issues, and maintaining documentation.

As an Operations Reliability Engineer, you will maintain network reliability and performance, troubleshoot incidents, and support automation initiatives across network operations.

The Network Operations Engineer will support and maintain customer networks, configure equipment, manage incidents, and ensure customer satisfaction while providing 24/7 support.

The Senior Network Engineer will support Exegy's network infrastructure, including administration, device maintenance, and collaboration with vendors for troubleshooting and changes.

The Senior Network Automation Engineer will enhance Perl code for network automation, maintain REST APIs, reduce technical debt, and support junior engineers.

Lead deployment and maintenance of UK Government network infrastructure (primarily Cisco), enhance security posture with SD-WAN, NGFWs, segmentation and content delivery, manage lifecycle and inventories, mentor engineers, drive project execution, and produce compliance and KPI reporting for senior leadership.

Lead technical delivery of customer projects and act as technical lead on network faults and major incidents. Provide hands-on, customer-facing support for enterprise SD‑WAN, LAN/WLAN, and security solutions; troubleshoot high-pressure incidents, manage escalations and change requests, and maintain technical documentation. Requires UK site travel and occasional out-of-hours work.