Job Description# FreeSWITCH Implementation Engineer
NLocation: Gurugram
NJob Type: Full Time - Onsite
NExperience: 2-5 Years
NCTC: 12 LPA for 2 years / 20 LPA for 5 years
N## Job Summary
nWeare 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 workplace.
N## Key Responsibilities
N### FreeSWITCH Core Responsibilities
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- Install, configure, and maintain FreeSWITCH in production environments from scratch. N
- Design and implement call flows, dialplans, IVRs, conferencing, and call routing with complete ownership. N
- Configure SIP profiles (internal/external), gateways, trunks, and extensions. N
- Implement multi-tenant and high-availability FreeSWITCH architectures. N

n### SIP, RTP & Networking
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- Strong understanding of SIP signaling, RTP media, and SDP negotiation. N
- Troubleshoot one-way audio,



no-audio, call drops, and registration failures. N
- Configure NAT traversal, firewall rules, and RTP port ranges. N
- Analyze SIP logs and traces using siptrace, sngrep, and tcpdump. N

n### Dialplan & Scripting
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- Develop dialplansusing: N
- XMLn
- Lua / JavaScript / Python N
- Implement logic for: N
- Call queues for inboundand outbound calls N
- Time-based routingn
- Skill-based routing N
- Failover and fallback handling N

n### Integrations &APIs;
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- Integrate FreeSWITCH with: N
- CRM / ERP systemsn
- Billing platforms N
- AI voice bots (ASR/TTS) N
- External WebSocket or REST services N
- Use Event Socket Library (ESL): N
- Inbound & Outbound ESL N
- Real-time call control and monitoring N

n### WebRTC & Media
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- Configure WebRTC support (DTLS-SRTP, ICE, OPUS). N
- Work with mod_verto, SIP over WSS. N
- Implement browser-basedcalli

📌 Implementation Engineer (Delhi Division)
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