le Summary We are looking for a VoIP/SIP Software Engineer to design and build real-time voice communication systems. The role requires strong expertise in SIP protocol, VoIP architecture, and C/C++ development, with hands-on experience in platforms like FreeSWITCH. Key Responsibilities Design and develop SIP-based VoIP applications and services Work on SIP signaling (INVITE, REGISTER, BYE) and call flows Develop and maintain SIP stack / SIP UA components Build and customize solutions using Fr