Senior Network Engineer

Colruyt Group India; Coimbatore District; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Colruyt Group India is seeking a skilled network engineer to monitor enterprise networks and provide Level-3 support for complex incidents and changes. You will configure routers, switches, firewalls, and load balancers across LAN/WAN/Wi‑Fi and data center environments.

Key duties include planning IT changes, documenting projects, performing trend analyses, and creating troubleshooting guides. Experience with Cisco Nexus, F5, ASA, Juniper, Palo Alto, and Python/Ansible is highly valued.

Qualifications

• Strong understanding of OSI model, TCP/IP, routing, switching, VLANs, LACP, RSTP, IGMP, QoS, and routing protocols including BGP.
• Hands-on experience with enterprise LAN, WAN, Wi-Fi, firewall, VPN, and data center network environments.
• Experience with Cisco Nexus/NX-OS, F5 LoadBalancers, ASA, Juniper SRX, Palo Alto, and multi-vendor Wi-Fi platforms such as Cisco and Juniper Mist.
• Ability to troubleshoot complex network issues using monitoring tools and packet analysis tools such as Wireshark.
• Good knowledge of incident, change, and problem management practices.
• Experience with F5 LTM, web application firewalls, RADIUS, IPVPN technologies such as GRE/IPsec, and network automation or scripting using Python and ansible.
• Knowledge of ITIL framework and relevant networking certifications will be an added advantage.

Responsibilities

• Monitor network availability, performance, and reliability across enterprise environments.
• Provide Level-3 support for complex network incidents, changes, and problems.
• Configure, install, troubleshoot, and maintain routers, switches, firewalls, load balancers, wireless, and data center network components.
• Plan, design, and execute IT changes and network projects with proper documentation and governance.
• Perform trend analysis, identify potential network problems, and drive proactive remediation.
• Create and maintain troubleshooting guides, knowledge articles, and operational documentation.
• Ensure accurate incident, change, and problem records using standard ITSM processes.

Skills

OSI model understanding

TCP/IP

Routing

Switching

VLANs

LACP

RSTP

IGMP

QoS

BGP

Wireshark

Incident management

Change management

Problem management

F5 LTM

Web application firewall

RADIUS

IPVPN

GRE/IPsec

Python

Ansible

ITIL

Tools

Cisco Nexus/NX-OS

F5 Load Balancers

ASA

Juniper SRX

Palo Alto

Mist

Wireshark

Job description

Job Description:

• Monitor network availability, performance, andreliability across enterprise environments.
• Provide Level-3 support for complex networkincidents, changes, and problems.
• Configure, install, troubleshoot, and maintainrouters, switches, firewalls, load balancers, wireless, and data center networkcomponents.
• Plan, design, and execute IT changes and networkprojects with proper documentation and governance.
• Perform trend analysis, identify potentialnetwork problems, and drive proactive remediation.
• Create and maintain troubleshooting guides,knowledge articles, and operational documentation.
• Ensure accurate incident, change, and problemrecords using standard ITSM processes.

Requirements

• Strong understanding of OSI model, TCP/IP,routing, switching, VLANs, LACP, RSTP, IGMP, QoS, and routing protocolsincluding BGP.
• Hands-on experience with enterprise LAN, WAN,Wi-Fi, firewall, VPN, and data center network environments.
• Experience with Cisco Nexus/NX-OS, F5 LoadBalancers, ASA, Juniper SRX, Palo Alto, and multi-vendor Wi-Fi platforms suchas Cisco and Juniper Mist.
• Ability to troubleshoot complex network issuesusing monitoring tools and packet analysis tools such as Wireshark.
• Good knowledge of incident, change, and problemmanagement practices.
• Experience with F5 LTM, web applicationfirewalls, RADIUS, IPVPN technologies such as GRE/IPsec, and network automationor scripting using Python and ansible.
• Knowledge of ITIL framework and relevantnetworking certifications will be an added advantage.