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Francois Callias is a highly experienced Senior Design Engineer at Phonak Communications AG, a position held since August 1992. Prior to this role, Francois served as Chief Engineer at Ascom-Audiosys from April 1989 to July 1992. Francois Callias holds a degree in Ingénieur Physicien from the École Polytechnique Fédérale de Lausanne (EPFL), where education was completed from 1971 to 1975.