Christophe joined the Tamedia group in May 2021 as Editor-in-chief Digital and Editorial development, for the paid titles in French-speaking Switzerland (24 heures, Tribune de Genève, Le Matin dimanche, Femina and Bilan). Holder of a Master 2 in contemporary history and a teaching degree in History and Geography, he started his professional career in 2002 as a History and Geography teacher. Since 2007, he has led a journalistic career in the media, with a focus on digital transformation. First within the Lagardère group as web editor for Le Journal du dimanche and Paris Match (2007-2009), then as head of the digital edition of Europe 1 (2009-2013); then at Radio France, where he was head of the digital department of France Inter (2013-2017); then at Libération, as deputy editorial director, in charge of digital transformation (2017-2021).