I am a Software Developer (VoIP) with more than 3 Years of hands on experience. I have worked on tools and languages which are mostly used in VoIP development. Python. Java, SIP Servers (Asterisk, Opensips & Telestax), RADIUS & Diameter Servers for Charging and Billing, Databases (MySQL, Redis), Kannel (SMS Gateway) etc are basic tools which are being used during my experience.