Network Security Engineer L3

Job description

**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