Data Center Network Engineer(Cisco CX
1 day ago
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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