Senior Telephony Engineer
Core
Design, build, and operate enterprise-grade voice infrastructure bridging traditional telephony with modern AI-powered real-time voice systems.
Role type
Senior IC telephony engineer (SIP/VoIP & AI integration)
Builds
Production-ready SIP gateways, AI voice agent pipelines, and cloud communications platforms
Domain
Telecommunications, Cloud Communications, AI Voice Systems
Deliverable
production ML models | infrastructure | product features
Required skills
SIP/VoIP protocol expertise, SBC configuration, audio transcoding, Python/Java/C#/JavaScript, cloud platform integration (AWS/Azure), CTI API integration, CI/CD practices
Preferred skills
SIP-to-AI gateway architecture, Azure Voice Live/AI Foundry, container orchestration (Docker/Kubernetes), Genesys/Cisco/Twilio experience
Technologies
pjsua2, FreeSWITCH, Asterisk, Azure ACS, AWS Connect, Terraform, Docker, Kubernetes, SQL
Responsibilities
Design and maintain SIP trunks, dial plans, and call routing; Build and operate SIP gateways with custom media handling; Configure Session Border Controllers for enterprise peering; Integrate telephony platforms with cloud-based real-time voice AI services; Write production-grade code for SIP gateway logic and integration middleware; Implement secure API integrations and webhook-driven event architectures
Seniority
Senior, hands-on IC