Avraham (Bibi) Rosenbach, the CEO of Kryon Systems, is a serial entrepreneur and experienced general manager with a history of building successful startup businesses. Bibi was the founder and CEO of Personeta, a market leader of an intelligent network service delivery platform for telecom operators; the company was later acquired by SmartCall. Prior to co-founding Personeta, he served as CEO of NetXchange Communications, a pioneering company in the field of Internet telephony. Bibi was also a member of founding team of Armon, a start-up that was acquired by Bay Networks (Nortel). He holds a BSc in mathematics and computer science from the Hebrew University, Jerusalem.