Data Network Engineer Lead

Tata Consultancy Services Limited; Chennai; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Tata Consultancy Services Limited in Chennai seeks a senior Data Network Engineer with 10+ years of Cisco networking experience to design, implement, monitor, and troubleshoot enterprise-scale networks. You will work with advanced monitoring tools and automation to optimize performance and reliability.

The role emphasizes configuring routing/switching, incident management, and developing scripts for operational efficiency in a large-scale environment.

Qualifications

• Experience managing enterprise Cisco networks.
• Strong routing and switching knowledge (VLANs, STP, OSPF, BGP).
• Proficient with network monitoring and analysis tools.

Responsibilities

• Manage enterprise-scale Cisco network infrastructure.
• Configure and troubleshoot routing and switching environments.
• Monitor network health using SolarWinds, NNMi, Cisco Catalyst Center, ThousandEyes, and Nagios.
• Perform packet analysis using Wireshark for complex network issues.
• Manage IPAM, DNS, and DHCP services through Infoblox.
• Diagnose and resolve network incidents, outages, and performance bottlenecks.
• Analyze logs and syslog data for proactive monitoring and troubleshooting.
• Develop scripts and automation solutions for operational efficiency.
• Create and maintain network documentation, SOPs, and knowledge repositories.

Skills

Network troubleshooting

Scripting (Python)

Automation

Incident management

Root cause analysis

Tools

Wireshark

SolarWinds

NNMi

DNA Center

Cacti

Nagios

ThousandEyes

Infoblox

Cisco DNA Center

Job description

Data Network_Cisco (10+ Years)

Location- Chennai

Roles & Responsibilities

• Manage enterprise-scale Cisco network infrastructure.
• Configure and troubleshoot routing and switching environments.
• Monitor network health using SolarWinds, NNMi, Cisco Catalyst Center, ThousandEyes, and Nagios.
• Perform packet analysis using Wireshark for complex network issues.
• Manage IPAM, DNS, and DHCP services through Infoblox.
• Diagnose and resolve network incidents, outages, and performance bottlenecks.
• Analyze logs and syslog data for proactive monitoring and troubleshooting.
• Develop scripts and automation solutions for operational efficiency.
• Create and maintain network documentation, SOPs, and knowledge repositories.

Routing & Switching

• VLANs
• Spanning Tree Protocol (STP)
• OSPF
• BGP
• Port-Channels (LACP/EtherChannel)
• Switch Stacking Technologies
• LAN/WAN Architecture and Troubleshooting

Network Monitoring & Management Tools

• HP NNMi (Network Node Manager i)
• Cisco Catalyst Center (DNA Center)
• Cacti
• SolarWinds
• Infoblox (DNS, DHCP, IPAM)
• Nagios
• Cisco ThousandEyes
• Syslog Monitoring and Analysis

Network Troubleshooting

• Packet Capture and Analysis using Wireshark
• Network Performance Analysis
• Traffic Flow Analysis
• Root Cause Analysis (RCA)
• Incident and Problem Management

Scripting & Automation

• Network Scripting Knowledge (Python preferred)
• Automation of Network Monitoring and Operational Tasks
• Log Parsing and Reporting