Senior Enterprise Network Engineer

US Main

United States

United States

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Senior Enterprise Network Engineer Location: Phoenix, AZ - Onsite Contract to Hire We are hiring a senior, well-rounded Enterprise Network Engineer with strong hands-on experience supporting both campus and data center environments. The ideal candidate will design, implement, and troubleshoot multi-building enterprise networks and work across networking, security, and systems teams while mentoring junior engineers. Core Responsibilities • Design, support, and troubleshoot enterprise networks across campus and data center • Handle complex end-to-end network issues and own problems through resolution • Support wired, wireless, firewall, DNS/DHCP, and load balancing infrastructure • Participate in on-call rotation, production changes, peer reviews, and RCA • Maintain network documentation, diagrams, and operational runbooks • Collaborate with security, systems, DBA, telecom, and application teams • Support building remodels, new construction, technology refreshes, and vendor integrations Required Technical Skills • Cisco Catalyst & Nexus switching (strong hands-on) • OSPF & BGP troubleshooting (not just configuration) • VLANs, STP, SVI, trunks, port-channels, DHCP relay, HSRP/VRRP failover • Multi-building campus network support (MDF/IDF environments) • MPLS segmentation, VRF, L3VPN concepts and troubleshooting • Controller-based Wireless – Cisco/Aruba/Extreme (WLC/AP, RF basics, SSID/VLAN mapping, AP onboarding, client connectivity) • Firewalls – Cisco ASA/Firepower or Palo Alto (NAT, ACLs, VPNs, packet flow analysis) • Enterprise DNS/DHCP/IPAM – BlueCat preferred, Infoblox acceptable • Load balancers – F5 or Citrix NetScaler (VIPs, pools, health checks, SSL termination) • Packet capture analysis and cross-layer troubleshooting • AWS or Azure networking fundamentals (VPC, VPN, subnets, peering, on-prem integration)

United States

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English

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