Title:  Sr Technical Lead-Cloud & Infra Engg

Area(s) of responsibility

Microsoft Teams Migration SME – VoiceAn experienced Microsoft Teams Enterprise Voice Migration Expert to lead and support enterprise telephony migration projects from legacy voice platforms such as Cisco Unified Communications Manager to Microsoft Teams Phone System. The role involves designing, implementing, and migrating enterprise voice solutions including Operator Connect, Microsoft Calling Plan, and Direct Routing.Key ResponsibilitiesLead end-to-end voice migration projects from legacy PBX / CUCM environments to Microsoft Teams Telephony.Design and implement Teams Phone architecture, including dial plans, voice routing policies, and PSTN connectivity.Configure and manage Enterprise Voice policies, Auto Attendants, Call Queues, and calling policies in Microsoft Teams.Implement PSTN connectivity using Operator Connect, Microsoft Calling Plan, or Direct Routing.Perform voice discovery and assessment including DID inventory, SIP trunks, dial plans, and gateway configurations.Support number porting activities and integration with telecom service providers.Assist with deployment and configuration of Microsoft Teams certified desk phones and Teams Rooms devices.Conduct pilot migrations, phased user migrations, and final cutover activities.Perform voice quality testing, call routing validation, and troubleshooting.Provide post-migration support (Hypercare) and ensure service stability.Deliver technical documentation and knowledge transfer sessions to customer IT teams.Required SkillsStrong experience in Microsoft Teams Phone System (Enterprise Voice).Hands-on experience with Operator Connect, Direct Routing, and Microsoft Calling Plan.Experience migrating telephony systems from Cisco CUCM or other PBX platforms.Knowledge of SIP, SBCs, PSTN integration, dial plans, and voice routing.Experience with AudioCodes / Ribbon SBCs and telecom integrations - OptionalUnderstanding of QoS, network readiness, and voice traffic optimization.Experience configuring Auto Attendants, Call Queues, and Voice Policies in Microsoft Teams.Preferred SkillsExperience working on large-scale telephony migrations (1000+ users).Experience with Microsoft Teams Rooms and Teams-certified devices.Familiarity with global telecom regulations (EMEA, AMEA, China regions).Experience working in manufacturing or production plant environments.Certifications (Preferred)Microsoft Teams Administrator AssociateExperience5–10 years of experience in Unified Communications / Voice solutions.Minimum 3+ years of hands-on experience with Microsoft Teams Voice implementations and migrations.Voice migration architecture and design documentsDial plan and PSTN integration configurationSuccessful migration of users to Microsoft Teams Telephony Post-migration validation and operational handover