I spent the first part of my career building software applications for telecoms, moving from large corporations (AT&T wireless) to startups, to creating my own startup as VoIP came on the scene in the early 2000s. The second part of my career has been quite different -- still voice comms-focused but this time in the open-source world. I am the creator of drachtio (the open source SIP application server for VoIP) and jambonz (the open source Voice Gateway for Conversational AI platforms).