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 setting.
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,call routing,routing,aws,freeswitch,webrtc,amp,sip,voip

📌 Freeswitch Implementation Engineer Gurugram
🏢 CG-VAK Software u0026 Exports
📍 Gurugram