Senior VoIP / SIP Developer
Core
Design, develop, and maintain intelligent call-routing solutions and SIP/VoIP infrastructure integrating multiple telecom operators.
Role type
Senior IC VoIP/SIP infrastructure engineer
Builds
Intelligent call-routing solutions, SIP routing logic, and failover mechanisms for production telephony systems
Domain
Telecommunications / Voice over IP (VoIP)
Required skills
SIP/VoIP production experience, Kamailio/OpenSIPS, Python/Node.js/TypeScript, PostgreSQL, Linux, Docker, cloud infrastructure, troubleshooting
Preferred skills
FreeSWITCH, Asterisk, LiveKit, rtpengine, Telnyx, Twilio, Plivo, Bandwidth, telecom carrier integrations, CPaaS platforms
Technologies
Kamailio, OpenSIPS, Python, Node.js, TypeScript, PostgreSQL, Linux, Docker, FreeSWITCH, Asterisk, LiveKit, rtpengine, Telnyx, Twilio, Plivo, Bandwidth
Responsibilities
Design and maintain intelligent call-routing solutions; Integrate multiple telecom operators; Implement SIP routing and failover mechanisms; Develop backend services; Manage PostgreSQL databases; Deploy services on Linux/Docker/cloud; Troubleshoot production issues
Seniority
Senior, hands-on IC