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Jean-Marie Calatraba possesses extensive experience in the real estate development sector, currently serving as the Directeur général at SEM since May 2023. Previously, Jean-Marie held the position of Directeur Développement Groupe at Groupe Polylogis, where responsibilities included overseeing property development and complex project management across multiple subsidiaries. Prior roles include Chef Pôle immobilier et développement at Cerema, Directeur Développement at Action Logement, and various senior leadership positions at Groupe Vivialys, Fondation Saint Matthieu, and Qatar Immobilier. Jean-Marie's educational background includes an engineering degree from Polytech Annecy-Chambéry, urban planning studies at the Institut d'Urbanisme de Grenoble, management training at HEC Paris, and strategic intelligence training from IHEDN.