Core Telephony Developer – SIP, Freeswitch, Node.js
Website TeamPlus
Years of Experience 5 to 8 Yeasr
Design, build, and maintain scalable, high-performance real-time
communication systems using Freeswitch, Kamailio, RTP Engine and APIs.
Own the core signaling, media handling, and session control layers that power
global voice services.
Optimize performance, call quality, and security across both cloud and
datacenter deployments.
Collaborate with SRE and Product teams to ensure reliability, observability,
and feature velocity in carrier-grade environments.
Skills
Critical: SIP, Freeswitch, Node.js
Highly Recommended: Kamailio, RTP Engine
Nice to Have: Python, Go
