Network Security Engineer L3

TCS Hiring!!!

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