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William Roussel is a seasoned UX Lead at Guarana Technologies Inc., a mobile development agency, since August 2013. Prior experience includes roles as Account Manager at Valeo, focusing on comfort and driving assistance products for Daimler AG, and as a Marketing and Sales Assistant for TOTAL in Paris, where contributions included sales support and project management. William also served as a Product Manager Assistant at Robert Bosch for the France and Benelux regions, and as a Marketing and Communication Project Leader at Descibel. Early career experiences include marketing advisory at the "24 hours of Le Mans" museum. William holds multiple degrees in International Marketing and Sales Management from the Berlin School of Economics and Law and Rennes School of Business.