Data Center Network Engineer

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.
Main 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, etc.
• 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.
• 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).

Requirements
• 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.
Preferred Certifications
• Cisco Certified Network Professional (CCNP – Data Center or Enterprise)