Deploy, configure, administer, and maintain network infrastructure equipment such as routers, switches, wireless modules, VoIP systems, load balancers, VPNs, and network security appliances.Ensure reliable connectivity for NU users and hosted services across LAN/WLAN environments.Monitor core routing and switching performance and manage VLAN configurations to ensure optimal functionality.Administer the call manager system for peak performance, monitor usage, and configure IP phones for end users.Define, enforce, and monitor security policies across systems including Fortinet appliances, firewalls, and IPS, ensuring alignment with business requirements.Track and analyze internet bandwidth utilization.Manage VPN configurations and access permissions for various user groups.Maintain and review logs from all network infrastructure systems.Conduct service evaluations for network services and recommend improvements.Plan and oversee infrastructure changes, assessing their impact on users and hosted services.Troubleshoot and resolve network and security-related issues.Collaborate with internal stakeholders and external vendors to fulfill operational needs.Provide end-user support across all network services offered.Generate and present regular reports to senior management.