Yossi Vardi is the Co-Founder & serves as Board Observer at Wefi. He is one of Israel's early tech entrepreneurs. For 39 years he founded and helped build over 50 tech companies in diverse areas of software, energy, Internet, mobile, electro-optics, clean water and others. In 1969, at the age of 26, he co-founded and was the first CEO of Tekem, one of the very first software houses in Israel (which became the largest software company at the time, was sold to Tadiran, went public and now is part of Ness). He also co-founded Alon oil company, ITL (International Laser Technologies, went public), Granite Hacarmel (went public) and others. In 1996 he became the founding investor of Mirabilis - the creator of ICQ, which is the first Internet-wide Instant messaging. In recent years Vardi is actively engaged in founding and helping young internet companies. Among the companies he invested in, or helped to build are Answers.com (went public), Gteko (sold to Microsoft), Airlink (sold to Sierra), Tivella (sold to Cisco), Scopus (went public), CTI2 (sold to Audiocodes), speedbit, Tucows (went public) and Foxytunes (sold to yahoo), Starnet (sold to IAC). He was advisor to the CEOs of AOL, Amazon.com, Allied-signal, Siemens-Albis and others. Yossi is a graduate of the Technion, Israeli institute of Technology, Dr. Vardi earned his D. Sc. (thesis received the Kennedy-Leigh award), and M.Sc (dissertation with distinction) in Operation Research, and B.Sc. in Industrial Management Engineering (summa cum laude).