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.
- Positive understanding of LAN/WAN infrastructure.

📌 Network Administrator (Chennai)
🏢 MIOT International
📍 Chennai