VOIP Developer

Desired Skills

• Good understanding of TCP/IP protocol stack and practical knowledge of LAN / WAN
• Very good knowledge on SIP / SDP protocol / RTP / SRTP / TLS protocols
• Experience in OpenSIPS or Kamailio
• Experience in Freeswitch, Asterisk
• Experience in MySQL, MongoDB
• Experience with C / C++ programming language
• Standard features of Enterprise Communication Servers (PBXs)
• Problem Troubleshooting and debugging techniques
• Review work of resources
• Good in Written and verbal communication

Nice to Have

• Inter-process communication, API design, message queues
• Experience in building any of softPBX, Voicemail, ACD, IVRS these applications
• Experience in any of the programming languages like Python, PHP, Javascript, Java
• Knowledge of Linux / server administration
• Experience in Linux and Linux commands line tools
• Knowledge of WebRTC
• Firewall, Security
• Tools cmake, git