Top Network Engineer Jobs in Belfast

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

Implement, test, deploy, troubleshoot and maintain REST API and SIP telecom solutions. Monitor and tune infrastructure for high availability, develop test automation, perform packet/protocol analysis, support deployments and upgrades, participate in Tier 3 on-call rotation, and identify continuous improvement opportunities.

Lead deployment, configuration, and live operation of vision and broadcast network systems across OB trucks, flypacks and remote production. Own camera, CCU, mixers, routers, multiviewers, SMPTE ST2110/IP workflows and multicast/PTP networks. Diagnose faults under pressure, support upgrades, mentor engineers, maintain standards, and contribute to technology strategy and documentation.

Design, secure and standardise OT network architecture for global BESS projects. Act as design authority, produce technical specifications, lead transformation, govern MSPs, ensure IT/OT segmentation and CNI compliance, and support project delivery and operational escalation.

Contract Data Centre Network Engineer to design, deploy, and operate high-performance data centre networks (leaf-spine, EVPN/VXLAN), manage routing (BGP/OSPF), automate configurations (Python/Ansible/Terraform), troubleshoot network and Linux systems, support Kubernetes networking, and contribute to monitoring, documentation, and capacity planning for AI/GPU infrastructure.

Responsible for designing, implementing and supporting networking solutions across multiple sites, maintaining firewalls, routing and security policies, troubleshooting outages and circuits, performing capacity planning and monitoring, ensuring compliance with public-sector security standards, participating in on-call rotation, and travelling to UK (and occasional international) sites.

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

As a NOC Engineer, you will ensure network stability by monitoring, troubleshooting, and resolving incidents in a critical operational environment, while adhering to SLAs.

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.

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.

Design, implement and operate network and IP infrastructure (LAN/WAN, microwave, VSAT). Troubleshoot, monitor performance, deploy hardware/software, support upgrades and projects, document systems, and promote secure-by-design practices while mentoring and improving processes.

Lead design, implementation, and support of datacentre and enterprise network and perimeter security systems. Own low-level designs, project rollout, documentation, supplier coordination, and handover to operations. Provide 24/7 support, troubleshooting, incident/change management, and continual improvement for managed service health customers.

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

Design, implement, monitor, and support WAN/LAN/wireless and firewall infrastructure. Deliver network projects, manage incidents, perform root-cause analysis, coordinate with ISPs/vendors, produce documentation, and support security and continuous improvement.

Serve as the highest technical escalation in the NOC for complex incidents and major outages. Lead troubleshooting and RCA across wired, wireless and WAN infrastructure, deliver complex implementations and migrations, mentor L2 engineers, develop operational standards and automation, work with vendors and suppliers, and drive continual service improvement.

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.

Lead technical delivery of customer network projects, act as technical lead for network faults, escalations and major incidents. Work with project and account managers, ensure solution quality, documentation, and provide hands-on enterprise support. Customer-facing role with UK site visits and occasional out-of-hours work.