Senior VOIP Developer

Designation :  Senior VOIP DeveloperExperience : 4+ YearsJob DescriptionDesired SkillsGood understanding of TCP / IP protocol stack and practical knowledge of VLAN / L3 VPNsVery good knowledge on SIP / SDP protocol / RTP / SRTP / TLS protocolsMust have knowledge in OpenSIPS or KamailioGood experience in Freeswitch, AsteriskMust have experience with C / C++ programming languageMust have knowledge in diameterExperience in MySQL, MongoDBSound knowledge of IMS call flowStandard features of Enterprise Communication Servers (PBXs)Problem Troubleshooting and debugging techniquesReview work of resourcesGood in Written and verbal communicationNice to HaveInter-process communication, API design, message queuesExperience in Freeswitch, AsteriskExperience 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