Network Administrator

MIOT International; Chennai District; On-site; INR 420,000 - 680,000; Full time

Job summary

MIOT International is seeking an experienced Network Administrator in Chennai to install, configure, monitor, troubleshoot, and maintain the enterprise network infrastructure. The candidate should manage Aruba switches/APs and Fortinet networking, covering LAN/WAN, VLANs, routing, security, and wireless operations.

Key duties include monitoring network performance, troubleshooting outages, and maintaining diagrams and IP documentation.

Qualifications

• Hands-on experience with Aruba and Fortinet wireless access points, switches, LAN/WAN infrastructure.
• Strong understanding of TCP/IP, VLAN, DHCP, DNS, NAT, and routing.
• Experience in network monitoring, troubleshooting, and change-management practices.

Responsibilities

• Install, configure, maintain, and troubleshoot enterprise network infrastructure.
• Manage LAN, WAN, VLANs, routing, switching, and wireless networks.
• Monitor performance, availability, bandwidth, and connectivity; resolve outages and latency issues.
• Coordinate firmware upgrades and configuration backups for Aruba and Fortinet devices.
• Maintain network diagrams, IP documentation, and configuration records.
• Support data-centre networking and end-to-end network connectivity tasks.

Skills

Aruba

Fortinet

TCP/IP

VLAN

DHCP/DNS

WAN/LAN

Wi‑Fi troubleshooting

Network monitoring

Firewall basics

Structured cabling

Job description

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.