Zoom Telephony Architect :- Phoenix, AZ(Onsite)

Zoom Telephony Architect

Location: Phoenix, AZ (Onsite)

Key Responsibilities

• Lead end-to-end Cisco UC to Zoom migration projects, including assessment, design, planning, and execution
• Analyze existing Cisco UC infrastructure (CUCM, Unity Connection, IM & Presence, Expressway, CUBE) and define migration strategies
• Design hybrid/coexistence architectures to support phased migrations
• Migrate users, numbers, dial plans, call flows, voicemail, and auto-attendants from Cisco to Zoom
• Configure and administer Zoom Phone, Zoom Meetings, and Zoom Rooms
• Integrate Zoom with existing enterprise systems (AD, SSO, SIP trunks, PSTN providers)
• Execute number porting, SIP trunk migrations, and PSTN cutovers
• Perform detailed testing, validation, and user acceptance before cutover
• Troubleshoot complex voice, video, and signaling issues during migration
• Develop migration runbooks, rollback plans, and technical documentation
• Provide post-migration optimization and stabilization support

Required Skills & Experience

• 5–10 years of experience in Unified Communications / Collaboration engineering
• Strong hands-on expertise in Cisco UC including:
  • CUCM, Unity Connection, IM & Presence
  • Cisco CUBE and SIP normalization
• Proven experience migrating Cisco UC environments to Zoom Phone
• Strong understanding of SIP, RTP, codecs, call flows, and dial plans
• Experience with enterprise PSTN connectivity, number porting, and carrier coordination
• Strong hands-on experience with Zoom UC platforms, especially Zoom Phone
• Solid understanding of VoIP fundamentals (SIP, RTP, codecs, call flows)
• Solid networking knowledge (QoS, VLANs, firewalls, NAT, SBCs)