Technical Lead - Enterprise Telephony / Teams Calling

About the role

The Technical Lead will own the design and delivery of enterprise telephony solutions, focusing on Microsoft Teams Calling and related Voice over IP (VoIP) services. This senior position drives architecture, integration, and operational excellence for a global telephony environment.

Key responsibilities

• Design telephony architecture across Teams, TOIP, Direct Routing, SBC and SIP trunking.
• Supervise SBCs, SIP trunks, numbering plans and Direct Routing configurations.
• Lead integration, deployment, operations and Level‑3 support for voice services.
• Ensure QoS, media quality, availability and security of the telephony platform.
• Produce telephony roadmap, architecture documentation, validation plans and automation scripts.
• Define and monitor QoS and availability KPIs, and generate post‑incident reports.

Required profile

• Senior technical lead with extensive experience in global enterprise telephony services.
• Proven ability to design, implement and support complex voice solutions.

Required skills

• TOIP
• SIP, RTP, QoS
• Microsoft Teams Phone and Direct Routing
• SBC administration
• PowerShell and automation scripting
• Voice incident troubleshooting
• Familiarity with Audiocodes, Oracle, Ribbon SBCs
• Experience with Cisco CUCM, Avaya, Alcatel, Mitel
• KQL and Power BI for voice analytics