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Senior Engineer Network


Job Location:

Chennai - India

Monthly Salary: Not provided by the employer
Posted: 29 September 2026 (Yesterday)
Application Deadline: 27 December 2026
Vacancies: 1 Vacancy

Job Summary

Key Responsibilities
  • Design configure maintain and troubleshootenterprise LAN/WAN network infrastructure.
  • Configure and managerouters switches firewalls wireless infrastructure and network devices.
  • Troubleshoot complex network issues related toconnectivity routing latency packet loss and network performance.
  • Implement and troubleshoot routing protocols such asOSPF BGP EIGRP and static routing.
  • Configure and manageVLANs Trunking STP EtherChannel HSRP/VRRP and other switching technologies.
  • Monitor network performance availability capacity and utilization.
  • Perform network configuration changes upgrades migrations and maintenance activities.
  • TroubleshootTCP/IP DNS DHCP NAT VPN ARP ICMP and other network-related issues.
  • Work closely withsecurity systems cloud application and telecom teams to resolve infrastructure issues.
  • Configure and troubleshootsite-to-site and remote-access VPNs.
  • Analyze network traffic using tools such asWireshark and other packet-analysis utilities.
  • Implement and troubleshootQoS for critical applications voice and video traffic.
  • Maintain network diagrams configurations technical documentation and operational procedures.
  • Handle incidents problems and changes in accordance withITIL processes.
  • Coordinate with ISPs and vendors forWAN circuit hardware and connectivity-related issues.
  • Participate in network infrastructure projects audits upgrades and disaster recovery activities.
Required Technical Skills
  • Strong hands-on experience inNetworking and Network Infrastructure.
  • Excellent knowledge ofTCP/IP LAN WAN VLAN VPN DNS DHCP NAT and subnetting.
  • Hands-on experience withCisco routers and switches or equivalent enterprise networking equipment.
  • Strong understanding ofRouting & Switching.
  • Experience withOSPF BGP EIGRP STP HSRP/VRRP.
  • Knowledge ofWAN technologies MPLS SD-WAN and Internet connectivity.
  • Good understanding ofnetwork security firewalls ACLs IPS/IDS and VPNs.
  • Experience with network monitoring and management tools such asSolarWinds PRTG Nagios or equivalent.
  • Hands-on experience withWireshark and network troubleshooting tools.
  • Knowledge ofIPv4/IPv6 subnetting IP addressing and network troubleshooting.
  • Understanding ofQoS and network performance optimization.
Good to Have
  • Experience withCisco ASA/Firepower Fortinet Palo Alto or Check Point firewalls.
  • Exposure toCisco ACI SD-WAN SDN or data-center networking.
  • Knowledge ofCloud Networking AWS/Azure/GCP.
  • Experience withF5 Load Balancers or other ADC technologies.
  • Exposure to network automation usingPython Ansible or REST APIs.
  • CCNA / CCNP certification or equivalent industry experience.
  • Experience working in a247 production support environment.

Required Experience:

Senior IC


About Company

3i Infotech Limited is a global Information Technology company committed to Empowering Business Transformation.A comprehensive set of IP based software solutions (20+), coupled with a wide range of IT services, uniquely positions the company to address the dynamic requirements of a va ... View more

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