Network Infrastructure Engineer

Job Summary

Support the daily operation, maintenance and improvement of enterprise network and voice infrastructure, ensuring reliable connectivity and timely resolution of service incidents.

Key Responsibilities

• Operate and support LAN, WAN, wireless networks, data centre connectivity and enterprise voice systems.

• Install, configure, maintain and troubleshoot Cisco switches, routers, wireless access points and associated network equipment.

• Monitor network availability, performance and alerts, investigate incidents and implement corrective actions.

• Provide Level 1 and Level 2 support, including troubleshooting, root cause investigation and escalation to vendors or specialist teams.

• Support routing and switching technologies, including BGP, EIGRP, OSPF, VLANs, STP, ACLs and MPLS.

• Implement approved network changes, infrastructure upgrades, equipment replacements and maintenance activities.

• Coordinate network projects with internal IT teams, telecommunications providers, equipment vendors and cabling contractors.

• Conduct wireless coverage assessments and site surveys, and perform network cabling inspections and connectivity testing.

• Support Cisco Unified Communications Manager (CUCM), Cisco Unity Connection (CUC), IP phones, Cisco Jabber, Webex, voice gateways and voicemail services.

• Handle voice user provisioning, extension configuration, phone registration and moves, adds, changes and deletions (MACD).

• Troubleshoot voice service issues using call detail records, gateway logs and other diagnostic information.

• Perform preventive maintenance, configuration reviews, software and firmware upgrades, and vulnerability remediation.

• Maintain network diagrams, configuration records, asset inventories and configuration management database (CMDB) information.

• Manage incidents, service requests and change tickets within agreed service-level agreements.

• Prepare operational reports and support capacity planning, audits and service improvement activities.

Requirements

• Diploma or Degree in Information Technology, Computer Science, Computer Engineering, Telecommunications or a related discipline.

• 5–6 years of relevant experience in enterprise network engineering or infrastructure support.

• Hands-on experience with Cisco switches, routers and wireless infrastructure.

• Working knowledge of LAN, WAN, wireless networking and the routing and switching technologies listed above.

• Experience in network monitoring, incident resolution, troubleshooting and change implementation.

• Working knowledge of Cisco enterprise voice systems, including CUCM, CUC, IP telephony and voice gateways.

• Understanding of network security, patching, vulnerability remediation and IT audit requirements.

• Ability to maintain accurate technical documentation and coordinate with vendors and internal stakeholders.

• Familiarity with Ekahau wireless survey tools and Fluke network testers would be an advantage.

• Strong problem-solving, communication and teamwork skills.