Roles & Responsibilities We are looking for a FreeSWITCH Implementation Engineer who will be responsible for designing, deploying, configuring, integrating, and maintaining FreeSWITCH-based VoIP platforms. The role involves working closely with SIP, RTP, WebRTC, IVR, conferencing, call routing, and external integrations in a production environment. Key Responsibilities

FreeSWITCH Core Responsibilities  Install, configure, and maintain FreeSWITCH in production environments from the scratch.  Design and implement call flows, dialplans, IVRs, conferencing, and call routing with complete ownership.  Configure SIP profiles (internal/external), gateways, trunks, and extensions  Implement multi-tenant and high-availability FreeSWITCH architectures SIP, RTP & Networking  Robust understanding of SIP signaling, RTP media, and SDP negotiation  Troubleshoot one-way audio, no-audio, call drops, registration failures  Configure NAT traversal, firewall rules, and RTP port ranges  Analyze SIP logs and traces (siptrace, sngrep, tcpdump) Dialplan & Scripting  Develop Dialplans Using XML





Lua / JavaScript / Python  Implement Logic For Call queues for inbound and outbound calls

Time-based routing

Skill-based routing

Failover and fallback handling

Integrations & APIs  Integrate FreeSWITCH With CRM / ERP systems

Billing platforms

AI voice bots (ASR/TTS)

External WebSocket or REST services  Use Event Socket Library (ESL) Inbound & Outbound ESL

Real-time call control and monitoring

WebRTC & Media  Configure WebRTC support (DTLS-SRTP, ICE, OPUS)  Work with mod_verto, SIP over WSS  Implement browser-based calling solutions Monitoring & Debugging  Monitor system performance and call quality  Analyze logs and CDRs  Optimize codec usage and RTP performance  Handle live production incidents and RCA Deployment & Operations  Deploy FreeSWITCH On Linux (CentOS / Ubuntu)

Cloud platforms (AWS / GCP / Azure – preferred)  Configure HA, load balancing, and scaling  Work with DevOps teams for CI/CD, backups, and automation Skills: platforms,sip,call routing,voip,aws,amp,webrtc,routing,freeswitch

📌 Telephony Engineer (FreeSWITCH, VoIP ) (Gurugram)
🏢 CG-VAK Software u0026 Exports
📍 Gurugram