VoIP Developer

2 weeks ago

Ahmedabad, India Arting Digital Private Limited Full time

This is a remote position. Posting title:       VoIP Developer (Kamailio-focused) Experience:         3-8 Years Location:              Remote Work mode:        Remote Primary skills:     VoIP, Kamailio, IMS, Diameter, C/C++ programming Qualification:       Any Technical Degree Role Overview We are looking for an experienced VoIP Developer with strong expertise in Kamailio/OpenSIPS, SIP-based communication systems, and a solid understanding of IMS/Diameter. The ideal candidate will have hands-on programming experience in C/C++, strong debugging skills, and the ability to work on large-scale communication platforms. Key Responsibilities Develop and maintain VoIP applications and SIP-based communication solutions. Work with SIP/SDP, RTP/SRTP, TLS, Diameter, and related communication protocols. Troubleshoot and resolve issues related to signaling, media, networking, and system performance. Collaborate with cross-functional teams for feature development and platform enhancements. Perform code reviews and ensure high-quality deliverables. Work with databases (MySQL, MongoDB) for configuration, logging, and provisioning. Contribute to design discussions and provide technical guidance when required. Required Skills Strong understanding of TCP/IP, VLAN, L3 VPNs. Excellent knowledge of SIP/SDP, RTP/SRTP, TLS protocols. Hands-on experience with Kamailio or OpenSIPS (mandatory). Programming experience in C/C++ (mandatory). Good understanding of Diameter protocol. Experience with MySQL and MongoDB. Knowledge of IMS call flows. Understanding of PBX/Enterprise Communication Server features. Strong troubleshooting, problem-solving, and debugging skills. Good written and verbal communication skills. Nice-to-Have Skills Experience with Inter-process communication, API design, message queues. Exposure to FreeSWITCH, Asterisk. Experience in building VoIP components like SoftPBX, Voicemail, ACD, IVR systems. Knowledge of scripting and programming languages: Python, PHP, JavaScript, Java. Strong knowledge of Linux systems, server administration, Linux command-line tools. Understanding of firewalls, security, networking concepts. Familiarity with tools like CMake, Git.

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