Network Engineer 4 4P​/810

Senior Network Engineer

We are seeking a Senior Network Engineer specializing in Cisco Voice and Collaboration to support a large enterprise telephony environment. This role will design, administer, troubleshoot, and maintain Cisco Unified Communications infrastructure across multiple locations and CUCM clusters.

The ideal candidate will have deep hands-on experience with Cisco CUCM, UCCX, Unity Connection, IM&P, Expressway, SIP, CUBE, voice gateways, VoIP protocols, and enterprise network technologies.

• Engineer, maintain, and support enterprise-wide Cisco Unified Communications and VoIP infrastructure.
• Administer and troubleshoot Cisco CUCM 14.x, UCCX, CUC, IM&P, Telepresence, and Expressway.
• Support Cisco voice gateways, SIP trunks, CUBE routers, analog/POTS services, and SBC solutions.
• Troubleshoot dial plans, call routing, translation patterns, voicemail, recording, and monitoring systems.
• Support E911 platforms, paging systems, voice recording servers, and related applications.
• Maintain LAN/WAN/WLAN, VPN, VoIP, and network infrastructure supporting voice services.
• Perform advanced troubleshooting of SIP, MGCP, SRTP, DNS, DHCP, and other voice/network protocols.
• Document network and voice standards, designs, and engineering changes.
• Update technical diagrams using Microsoft Visio.
• Work with vendors, business partners, and internal technology teams.
• Participate in after-hours support and on-call rotations as required.

• Bachelor's degree in Computer Science or related field with 10+ years of relevant technical experience, or 15+ years of voice/network experience.
• Expert-level experience supporting enterprise VoIP, telephony, video conferencing, and collaboration platforms.
• Strong hands-on experience with:
  • Cisco CUCM 14.x
  • UCCX
  • Cisco Unity Connection
  • IM&P
  • Cisco Expressway / Telepresence
  • Cisco CUBE
  • SIP Trunks
  • Voice Gateways
  • Jabber / Webex
• Strong understanding of TCP/IP, OSPF, VLAN, Spanning Tree, SNMP, RADIUS, SIP, MGCP, DNS, and DHCP.
• Experience with Cisco UCS, VMware, vSphere, Windows, and Linux/UNIX.
• Strong troubleshooting and enterprise customer-support skills.
• Ability to work independently and communicate effectively with technical teams, vendors, and management.

• ACME Packet SBC experience.
• Cisco ISR/ASR, Nexus 5K/7K, routers, and switches.
• E911 administration.
• Python, JSON, API integration, or scripting experience.
• Experience with enterprise network monitoring and administrative tools.