Were looking for an experienced and motivated Voip Developer -Opensips Freeswithc, Asterisk, KamilioDesired Skills:Good understanding of TCP/IP protocol stack and practical knowledge of LAN / WANVery good knowledge on SIP / SDP protocol / RTP / SRTP / TLS protocolsExperience in OpenSIPS or KamailioExperience in Freeswitch, AsteriskExperience in MySQL, MongoDBExperience with C / C++ programming languageStandard features of Enterprise Communication Servers (PBXs)Problem Troubleshooting and debugging techniquesReview work of resourcesGood in Written and verbal communicationRequirementsInter-process communication, API design, message queuesExperience in building any of softPBX, Voicemail, ACD, IVRS these applicationsExperience in any of the programming languages like Python, PHP, Javascript, JavaKnowledge of Linux / server administrationExperience in Linux and Linux commands line toolsKnowledge of WebRTCFirewall, SecurityTools cmake, git