Network Support Engineer L3

Tata Consultancy Services; Hyderabad, Chennai District, Bengaluru; On-site; INR 1,500,000 - 2,300,000; Full time

Job summary

Tata Consultancy Services in Hyderabad, India, is seeking a skilled L3 Network Support professional to manage datacenter infrastructure, provide Level 3 incident resolution, and drive proactive fixes.

The role emphasizes Infoblox DDI management, TCP/IP routing, ITIL processes, and 24x7 production support, with strong troubleshooting and RCA leadership.

Qualifications

• Strong hands-on experience with Infoblox DDI (DNS, DHCP, IPAM).
• Solid understanding of TCP/IP, routing (BGP, OSPF), VLANs, VXLAN.
• Knowledge of network security concepts (ACLs, segmentation).
• Experience in production support (24x7) environments with ITIL framework.

Responsibilities

• Provide Level 3 support for datacenter network infrastructure incidents, problems, and changes.
• Perform advanced troubleshooting for complex network and application-related issues.
• Lead root cause analysis (RCA) and implement preventive measures.
• Participate in Major Incident Management (MIM) calls and maintain SLA.

Skills

DNS & IP networking basics

Troubleshooting

Root cause analysis

Tools

Infoblox DDI

Job description

Role & responsibilities

Technical Skills

Strong hands-on experience in:

• Infoblox DDI (DNS, DHCP, IPAM)

Solid understanding of:

• TCP/IP, routing (BGP, OSPF), VLANs, VXLAN
• Network security concepts (ACLs, segmentation)

Process Knowledge

• Good understanding of ITIL framework
• Experience working in production support (24x7) environments

L3 Support & Operations

• Provide Level 3 support for datacenter network infrastructure incidents, problems, and changes
• Perform advanced troubleshooting for complex network and application-related issues
• Lead root cause analysis (RCA) and implement preventive measures

Infoblox DDI

• Manage DNS, DHCP, and IPAM using Infoblox
• Troubleshoot DNS resolution, IP conflicts, and DHCP issues
• Maintain IP address schema and documentation

Operational Excellence

• Follow and enforce ITIL processes (Incident, Problem, Change, Release Management)
• Ensure all activities are documented in ticketing systems
• Participate in Major Incident Management (MIM) calls
• Maintain SLA compliance and service availability