Network Administrator

Network administrators

We are looking for an experienced Network Administrator responsible for the installation, configuration, monitoring, troubleshooting, and maintenance of enterprise network infrastructure.

The candidate should have hands-on experience with Aruba and Fortinet wireless access points, switches, LAN/WAN infrastructure, network security, monitoring, and network maintenance.

Key Responsibilities

Network Administration

* Install, configure, maintain, and troubleshoot enterprise network infrastructure.

* Manage LAN, WAN, VLAN, routing, switching, and wireless networks.

* Monitor network performance, availability, bandwidth, and connectivity.

* Troubleshoot network outages, latency, packet loss, and connectivity issues.

* Perform network configuration changes in accordance with change-management procedures.

* Maintain network diagrams, IP address documentation, and configuration records.

Aruba Networking

* Configure and manage Aruba switches and wireless access points.

* Configure VLANs, trunk/access ports, LACP, STP, and related switching features.

* Manage Aruba wireless infrastructure, SSIDs, authentication, and access policies.

* Monitor AP health, client connectivity, coverage, and wireless performance.

* Troubleshoot wireless connectivity, roaming, interference, and performance issues.

* Perform firmware upgrades and configuration backups for Aruba devices.

Fortinet Networking

* Configure and maintain Fortinet network and security infrastructure.

* Administer Fortinet switches and wireless access points where deployed.

* Configure VLANs, interfaces, routing, policies, and network connectivity.

* Monitor network and security events.

* Troubleshoot Fortinet AP, switching, and connectivity issues.

* Coordinate with security teams for firewall and network-security requirements.

Switching & Routing

* Configure and troubleshoot managed network switches.

* Manage VLANs, trunking, access ports, STP/RSTP, LACP, and port security.

* Perform basic routing configuration and troubleshooting.

* Manage IP addressing, subnetting, DHCP, DNS, and network connectivity.

* Troubleshoot Layer 2 and Layer 3 network issues.

* Maintain network redundancy and high availability.

Wireless Network Administration

* Deploy and maintain enterprise Wi-Fi infrastructure.

* Configure corporate and guest SSIDs.

* Manage authentication and access control.

* Monitor wireless coverage, capacity, signal strength, and client performance.

* Perform wireless troubleshooting and optimization.

* Conduct site surveys and coordinate AP installation when required.

Network Maintenance

* Perform regular preventive maintenance of network devices.

* Maintain device configurations and configuration backups.

* Perform firmware and software upgrades.

* Monitor device health, CPU, memory, interfaces, and bandwidth utilization.

* Replace faulty switches, APs, cables, SFPs, and other network components.

* Maintain network asset inventory and documentation.

* Coordinate with ISP and hardware/network vendors for issue resolution.

Data Centre Networking

* Support network infrastructure within data-centre environments.

* Maintain switch connectivity for servers, virtualization platforms, storage, and other infrastructure.

* Coordinate with server, storage, security, and data-centre teams.

* Assist with network implementation and infrastructure expansion.

* Follow data-centre change-management and maintenance procedures.

Monitoring & Incident Management

* Monitor network devices and respond to alerts.

* Troubleshoot and resolve network incidents within agreed SLAs.

* Perform root-cause analysis for recurring network problems.

* Escalate complex issues to senior network engineers or vendors.

* Maintain incident, change, and maintenance records.

* Participate in on-call/24x7 support when required.

Required Technical Skills

* Aruba: Aruba switches, Aruba APs, wireless administration.

* Fortinet: Fortinet switching and wireless infrastructure.

* Strong understanding of TCP/IP, VLAN, subnetting, DHCP, DNS, NAT, and routing.

* Switching concepts including STP/RSTP, LACP, trunking, and port security.

* Enterprise Wi-Fi configuration and troubleshooting.

* Network monitoring and troubleshooting tools.

* Basic understanding of firewalls and network security.

* Structured cabling and physical network troubleshooting.

* Good understanding of LAN/WAN infrastructure.