FreeSwitch Developer

Walkover Web Solutions Pvt. Ltd.; Indore District; On-site; INR 900,000 - 1,500,000; Full time

Job summary

Walkover Web Solutions Pvt. Ltd. is seeking a skilled VoIP engineer to develop and maintain FreeSWITCH-based solutions. Responsibilities include implementing call routing, IVR, and dialplan logic, and ensuring seamless integration with backend systems and APIs.

The role requires solid experience with FreeSWITCH, SIP/RTP/WebRTC, Linux environments, and diagnostic tools like sngrep and Wireshark. You will work on real-time communication platforms and contribute to scalable, low-latency deployments.

Qualifications

• Strong experience with FreeSWITCH architecture and modules.
• Good understanding of SIP, RTP, WebRTC, and VoIP fundamentals.
• Knowledge of Linux environments and networking concepts.
• Hands-on experience with call flows, IVR, and conferencing systems.
• Experience with debugging tools like sngrep, Wireshark.

Responsibilities

• Develop and maintain VoIP applications using FreeSWITCH.
• Design and implement call routing, IVR, and dialplan logic.
• Integrate FreeSWITCH with backend systems and APIs.
• Work with SIP, RTP, and WebRTC protocols.
• Troubleshoot and resolve call quality and performance issues.
• Optimize system performance for scalability and low latency.
• Collaborate with cross-functional teams for product enhancements.

Skills

FreeSWITCH

SIP

RTP

WebRTC

VoIP fundamentals

Linux

Call routing/IVR

Troubleshooting

Tools

sngrep

Wireshark

Job description

You will be responsible for developing, customizing, and maintaining VoIP-based solutions using FreeSWITCH, ensuring high availability, performance, and reliability of real-time communication systems.

Responsibilities

• Develop and maintain VoIP applications using FreeSWITCH
• Design and implement call routing, IVR, and dialplan logic
• Integrate FreeSWITCH with backend systems and APIs
• Work with SIP, RTP, and WebRTC protocols
• Troubleshoot and resolve call quality and performance issues
• Optimize system performance for scalability and low latency
• Collaborate with cross‑functional teams for product enhancements

Qualifications

• Strong experience with FreeSWITCH architecture and modules
• Good understanding of SIP, RTP, WebRTC, and VoIP fundamentals
• Knowledge of Linux environments and networking concepts
• Hands‑on experience with call flows, IVR, and conferencing systems
• Experience with debugging tools like sngrep, Wireshark

Good to Have

• Experience with CPaaS or telecom platforms
• Knowledge of Kamailio / Asterisk
• Exposure to cloud infrastructure (AWS/GCP)
• Understanding of scalable distributed systems