Looking for Senior Network Engineer focused on Cisco enterprise/data center switching. The ideal candidate is a hands-on infrastructure engineer who can design, implement, troubleshoot, and support Layer 2/Layer 3 switching, Cisco NexCatalyst environments, switching fabrics, and fiber optic connectivity in a hybrid enterprise environment.
Target candidate profile:
A Cisco CCNP-certified Network Engineer with strong experience supporting enterprise or data center switching infrastructure, comfortable handling Tier 2/3 escalations, change management, and cross-functional collaboration with security and infrastructure teams. Position Overview Join a team responsible for designing, deploying, and supporting enterprise and data center Cisco switching infrastructure. This opportunity is ideal for a hands-on network engineer with deep expertise in Layer 2 and Layer 3 switching, switching fabric technologies, and fiber optic connectivity within complex Cisco environments. What You'll Do Design, configure, deploy, and support Cisco Layer 2 and Layer 3 switching infrastructure using Catalyst and Nexus platforms. Manage switching fabric architectures including leaf-spine and core/distribution/access designs. Configure VLANs, trunking, inter-VLAN routing, SVIs, routed ports, and multilayer switching. Deploy and troubleshoot dynamic routing protocols including OSPF, EIGRP, and BGP. Implement Spanning Tree, VPC, port channels, and
LACP/PAGP
configurations. Support
VXLAN/EVPN
overlay fabrics in modern data center environments. Install, validate, and troubleshoot fiber optic transceivers and connectivity across enterprise infrastructure. Collaborate with security teams on firewall interface connectivity and network segmentation. Perform capacity planning, performance monitoring, documentation, and Tier 2/3 escalation support. Participate in change management, maintenance windows, and on-call rotation. Required qualifications (priority) Cisco CCNP Enterprise or Data Center certification 5+ years of enterprise/data center Network Engineering experience Hands-on experience with Cisco Catalyst (3K/4K/9K) and Cisco Nexus (5K/7K/9K) Strong Layer 2 expertise: VLANs, STP variants, trunking, LACP/PAGP, VPC Strong Layer 3 expertise: SVIs, multilayer switching, OSPF/EIGRP/BGP, HSRP/VRRP/GLBP Fiber optic networking: SFP/SFP+/QSFP+/QSFP28, SMF/MMF, DOM, OTDR, optical troubleshooting Experience supporting Cisco switching infrastructure in enterprise or data center environments Preferred qualifications
VXLAN/EVPN
data center fabric experience Network monitoring tools (SolarWinds, PRTG, Nagios, or similar) Wireshark and
SPAN/RSPAN/ERSPAN
experience ITSM/change management tools (ServiceNow or similar) Arista EOS familiarity Niche skill combination: Cisco Nexus switching fabric + advanced Layer 2/Layer 3 switching + fiber optic infrastructure + working familiarity with firewall interface integration.
