Data Center Network Engineer(Cisco CX & Aruba CX) - Delhi / Noida / Hyderabad

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.