VoIP Developer (Remote)

About the Role:We are looking for an experienced VoIP Developer to design, develop, and maintain enterprise communication systems. You will work with Kamailio, OpenSIPS, Freeswitch, and Asterisk to build scalable VoIP solutions.Skills Required:Hands-on experience with Kamailio, OpenSIPS, Freeswitch, AsteriskKnowledge of IMS & DiameterProficiency in C / C++ programmingStrong understanding of TCP/IP, LAN/WAN, VLAN/L3 VPNsGood knowledge of SIP/SDP, RTP/SRTP, TLS protocolsExperience with MySQL / MongoDBUnderstanding of Enterprise PBX featuresProblem-solving and debugging skillsGood written and verbal communicationNice-to-Have:Building softPBX, Voicemail, ACD, IVRS applicationsExperience with Python, PHP, Java, JavaScriptLinux administration and command-line skillsKnowledge of WebRTC, firewall, securityFamiliarity with tools like cmake and gitWhat We Offer:Remote / flexible work optionsOpportunity to work on large-scale VoIP systemsCollaborative environment with skilled peers