Job Summary

The Voice Engineer owns day-to-day engineering support of the voice and unified communications environment for the Mosaic Infrastructure Managed Services engagement, spanning roughly 60 sites across the United States, Canada, Brazil, Peru, and Paraguay. The current environment includes a legacy Cisco Unified Communications Manager (CUCM) estate that is being progressively decommissioned as the client transitions to modern cloud-based calling. This role supports and stabilizes the existing voice platform, executes moves/adds/changes/deletes (MACDs), troubleshoots voice quality and connectivity issues, and plays a hands-on role in migration and decommission activities in coordination with the network team.

Responsibilities
- Provide day-to-day operational support of the Cisco CUCM environment, including call routing, dial plans, device registration, voicemail, and related UC services.
- Execute voice MACDs (moves, adds, changes, deletes) for users, devices, hunt groups, and call flows through the account's request and change processes.
- Troubleshoot voice quality,



registration, and connectivity issues across sites, including SIP trunking, gateways, and QoS-related problems, escalating to carriers or the network team as needed.
- Support the phased decommission of the legacy CUCM estate, including site-by-site discovery, migration planning inputs, cutover execution, and post-cutover validation.
- Coordinate with carriers and telecom vendors on circuit, trunk, and number porting activities in support of migrations and incident resolution.
- Maintain accurate documentation of the voice environment, including dial plans, trunk inventories, gateway configurations, and site voice profiles.
- Partner with the Network Engineer Lead and network team on voice-impacting network changes (QoS, VLANs, firewall rules for voice traffic).
- Support Microsoft Teams calling/telephony integration activities where in scope of the client's target-state voice platform.
- Part

📌 Voice Engineer (Bogotá)
🏢 Auxis- US
📍 Bogotá