Senior Routing & Switching Engineer

Experience

8+ years

Certification

CCIE mandatory

Primary Focus

Cisco Nexus/Catalyst/ASR/8300, Aruba CX and Juniper switching

Role Summary

Senior network engineer responsible for implementation, migration and troubleshooting of enterprise and data-center routing/switching infrastructure across Cisco, Aruba and Juniper platforms. The role requires strong architecture awareness and hands-on execution during complex network cutovers.

Key Responsibilities / Implementation Scope

• Design, configure and implement Layer 2/Layer 3 connectivity across data center, campus, branch, management, DMZ and external routing environments.
• Configure and migrate Cisco Nexus switching, including Nexus 9504 core, Nexus 9348 access and Nexus 93180YC platforms used in DMZ/access roles.
• Configure and support Cisco Catalyst 8000/9000 platforms, Cisco ASR 1002 and Cisco 8300 series external routers.
• Configure and migrate Aruba switching platforms including CX 6200, CX 6300, CX 8320 and related hardware such as JL479A and JL658A.
• Support Juniper switching where present, including legacy EX3300 and EX2200 devices identified in the environment.
• Implement and troubleshoot BGP, OSPF, static routing, route redistribution, route filtering, VRFs, HSRP/VRRP and policy-based routing as required.
• Configure VLANs, trunks, STP/RSTP/MST, EtherChannel/LACP, port-channels, inter-VLAN routing and network segmentation.
• Support connectivity integration with firewalls, load balancers, wireless, NAC, voice, cloud and security platforms.
• Perform hardware refreshes, network migrations and site/data-center cutovers with pre-checks, rollback procedures and post-change validation.
• Conduct packet-level troubleshooting, routing-path analysis, interface/error analysis and root-cause investigation for complex connectivity incidents.
• Prepare implementation plans, MOPs, test scripts, rollback plans, low-level designs and as-built documentation.

Required Technical Skills

Area

Required Hands-on Experience

Cisco Nexus

Nexus 9504, 9348 and 93180YC; NX-OS operations, VLAN/VRF, vPC/port-channel concepts and data-center switching.

Cisco Routing / Switching

Catalyst 8K/9K, ASR 1002, Cisco 8300 series; enterprise LAN/WAN and external routing.

Aruba Switching

Aruba CX 6200/6300/8320 and relevant models such as JL479A/JL658A.

Juniper Switching

Juniper EX3300 and EX2200 operational support and migration exposure.

Routing Protocols

BGP, OSPF, static routing, route redistribution/filtering, VRF, HSRP/VRRP and policy-based routing.

Layer 2 / Segmentation

VLANs, 802.1Q trunking, STP/RSTP/MST, EtherChannel/LACP, port-channel, inter-VLAN routing and segmentation.

Troubleshooting

Packet capture, routing-path analysis, latency/loss analysis, interface errors, convergence and incident RCA.

Certification Requirements

Mandatory: Active CCIE certification is mandatory. CCIE Enterprise Infrastructure is preferred; legacy CCIE Routing & Switching is acceptable where valid/relevant.

Preferred / Advantageous: Additional Cisco data-center, Aruba switching or Juniper certifications are advantageous.

Required Deliverables

• Low-level network design and port/VLAN/routing configuration workbook
• Implementation runbooks and MOPs
• Network migration/cutover and rollback plans
• Connectivity and failover test scripts with results
• As-built diagrams/configurations and operational handover documentation