Data Center Network Engineer(Cisco CX

2 days ago

uttar pradesh, India Tata Consultancy Services Full time

Total Exp : 8 to 12 Years Locations : Delhi / Noida / Hyderabad We are seeking a seasoned Level 3 Datacenter Network Engineer with in-depth experience in Cisco and Aruba networking technologies . The ideal candidate will lead the design, implementation, and troubleshooting of high-performance data center infrastructure with a focus on high availability, security, and scalability . You will serve as a technical SME for complex network problems, architecture decisions, and cross-platform integrations in modern hybrid environments. Key Responsibilities: Design & Architecture: Design and deploy resilient, high-speed, low-latency network topologies across data center fabric using Cisco Nexus (3K/5K/7K/9K) and Aruba CX switches. Architect Layer 2/Layer 3 networks with: VXLAN/EVPN overlays BGP EVPN , OSPF , LACP VPC, MLAG, VSX Design and implement fabric-based topologies and Spine-Leaf architectures .. Configure Cisco Nexus (NX-OS) and Aruba CX (AOS-CX) Deploy and manage L2/L3 segmentation , VRFs , VLANs , SVIs , Private VLANs , and inter-VLAN routing . Implement routing redistribution , policy-based routing , HSPR/VRRP/GLBP , and route filtering . Work with overlay technologies (VXLAN, LISP) and underlay IP fabric (BGP/OSPF). Automation & Monitoring: Automate provisioning using Ansible, Python , or REST APIs for Aruba CX and Cisco Nexus (via NX-API or Cisco DNAC). Utilize NetEdit (Aruba) , Aruba Fabric Composer , and Cisco DCNM or APIC for centralized management. Perform capacity planning , failover testing , and performance tuning of the datacenter network. Lead root cause analysis (RCA) and troubleshooting of L2/L3 issues, link flaps, STP/RSTP, convergence issues, or fabric-related errors. Serve as Tier 3 escalation point for critical incidents and collaborate with vendors (TAC/Support). Create detailed network diagrams , HLDs/LLDs , and SOPs for operational teams. Perform firmware upgrades , code validation , and manage change controls (ITIL-based processes). Required Skills & Experience: 8+ years of experience in enterprise or data center networking . Deep hands-on experience with: Cisco Nexus platforms (9K, 7K, 5K, 3K) running NX-OS Aruba CX switches (6300, 6400, 8325, 8400) with AOS-CX Fabric technologies : VxLAN/EVPN, VSX, MLAG, VPC, LAG Routing protocols : BGP, OSPF, static routing L2 protocols : STP, RSTP, MST, LACP, CDP/LLDP Expertise in: CLI troubleshooting Packet captures with SPAN/RSPAN QoS design , queuing strategies, and buffer tuning Dual-stack networking (IPv4/IPv6) Preferred Certifications: Cisco Certified Network Professional (CCNP – Data Center or Enterprise) Soft Skills: Excellent troubleshooting and diagnostic skills under pressure. Strong documentation, diagramming, and presentation abilities. Self-driven with the ability to work independently and lead projects. Clear communication across technical and business teams. Ability to mentor junior engineers and support staff.

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