Sira Consulting, an Inc 5000 company · 1 day ago
Telephony Architect
Phoenix, AZ
Contract
Onsite
Senior Level
5+ years expSira Consulting, an Inc 5000 company, is seeking a skilled Zoom Telephony Architect. The role involves leading end-to-end migration projects from Cisco UC to Zoom, including assessment, design, planning, and execution, while also providing post-migration support.
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Hiring Manager
Swapnil Sagar
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
Qualification
Required
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)
Experience supporting global, multi-site voice deployments
Company
Sira Consulting, an Inc 5000 company
SiRA Consulting is a Certified MBE consulting company that was founded in 2012.
201-500 employees
H1B Sponsorship
Sira Consulting, an Inc 5000 company has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (14)
2024 (50)
2023 (42)
2022 (63)
2021 (86)
2020 (70)
Funding
Current Stage
Growth StageCompany data provided by crunchbase