Experienced Cisco UC Engineer with 17+ years in enterprise deployments

CHRISTOPHER CANNATARO

Yonkers, NY

646-***-**** ️ **********@*****.***

CISCO UNIFIED COMMUNICATIONS ENGINEER

Senior UC Engineer with 17+ years of experience designing, implementing, supporting, and optimizing enterprise Cisco Unified Communications environments. Proven expertise in CUCM, Unity Connection, UCCX, SIP, gateways, voicemail, call routing, and collaboration platforms. Strong background in system upgrades, migrations, troubleshooting, and cross-team collaboration in large enterprise and healthcare environments.

CORE TECHNICAL SKILLS

Cisco UC Platforms

Cisco Unified Communications Manager (CUCM 12.5 15)

Cisco Unity Connection

Cisco UCCX / Finesse / Intelligence Center

Cisco Emergency Responder

Cisco Expressway (MRA)

Cisco Jabber / Collaboration Tools

Cisco TelePresence & Video Conferencing

Voice & Network Technologies

SIP, H.323, MGCP

PSTN Circuits, SIP Trunks, Gateways

Call Routing, Dial Plans, Hunt Groups, Call Queues

Voicemail, IVR, Call Recording (Variphy, Call Replay)

Systems & Operations

UC Installations, Upgrades & Migrations

Patch Management & Version Control

Troubleshooting & Root Cause Analysis

System Health Monitoring & Performance Optimization

Capacity Planning

Change Management & Documentation

Tools

SecureCRT, WinSCP

Cisco Prime / Monitoring Tools

Microsoft Office Suite

PROFESSIONAL EXPERIENCE

Pace University — New York, NY

Senior Voice Specialist December 2021 – Present

Install, configure, maintain, and upgrade enterprise Cisco UC systems including CUCM, Unity Connection, UCCX, Emergency Responder, Expressway, Jabber, and Cisco TelePresence.

Support a multi-campus UC environment providing voice, video, messaging, wireless, and data services.

Lead CUCM 12.5.1 to 15 upgrade project, including planning, testing, and migration strategy.

Troubleshoot complex UC issues involving call routing, SIP signaling, voicemail, gateways, PSTN circuits, and collaboration tools.

Perform system health checks, proactive monitoring, and issue remediation to ensure high availability.

Manage patches, software updates, and version upgrades across UC platforms.

Collaborate with network, infrastructure, and vendor teams to ensure system reliability and performance.

Maintain detailed documentation for configurations, workflows, and change procedures.

Support UC-related projects including adds, moves, and changes (MACs).

Maintain UC inventory, databases, and user provisioning records.

ConvergeOne (Contracted to Northwell Health) — New York, NY

Technician / Trainer March 2021 – Present

Senior member of the Zebra implementation team supporting enterprise healthcare environments.

Provide installation, configuration, maintenance, and troubleshooting of Zebra hand held devices across hospitals.

Develop and deliver technical training guides for technicians and call center staff.

Train and mentor new and on-call technicians on Zebra systems and support procedures.

Perform day-to-day system maintenance and programming to ensure operational continuity.

ABC / Disney — New York, NY

Telecommunications Manager / Engineer 2005 – 2016

Led telecommunications operations across the East Coast, supporting enterprise voice and collaboration systems.

Administered Cisco Call Manager, Cisco Unity, routers, gateways, PSTN circuits, SIP trunks, and video conferencing platforms.

Played a key role in enterprise migration from Nortel CS1000 to Cisco Unified Communications.

Designed and implemented Cisco TelePresence and Polycom video conferencing rooms.

Troubleshot voicemail, call routing, and UC performance issues to maintain service reliability.

Coordinated with carriers and vendors for circuit ordering, installation, and testing.

Managed UC inventory, RMA processes, billing reconciliation, and system documentation.

Developed and delivered comprehensive user training programs for phone and voicemail systems.

Performed preventative maintenance and optimization to ensure high system availability.

Earlier Experience

Insurance Agent – American Income Life 2017 – 2021

Operations / Customer Service / Management Roles 1998 – 2004

(Earlier roles demonstrate leadership, customer service, and operational management skills.)

EDUCATION & CERTIFICATIONS

(Add certifications here if applicable: CCNA Voice, CCNP Collaboration, etc.)

HIGHLIGHTS FOR THIS ROLE

Extensive hands-on experience with Cisco CUCM, Unity Connection, UCCX, SIP, gateways, and collaboration tools

Proven success with installations, upgrades, patches, and migrations

Strong troubleshooting skills across call routing, voicemail, SIP, PSTN, and UC applications

Experience working in enterprise, healthcare, and education environments

Excellent documentation, training, and cross-team collaboration skills

Contact this candidate