Experiential strengths Contact News Agencies and subsidiaries Group References Recruitment Isovoile English Route Olivier, 33 years old agency Director Hired as a works engineer, Olivier is now director of an agency of nearly 100 people. ... All routes Locations News July 09, 2015 The Guiban company joins the Léon Grosse group Léon Grosse strengthens in the West of France with an acquisition in climatic engineering and water treatment June 10, 2015 New governance for the company Bertrand Grosse will be appointed Chairman of the Management Board at the end of the General Meeting of June 26, 2015. All the news Construction sites 2015 - New RER station at Nanterre University (92) 2014 - Geoffroy-Guichard Stadium, Saint-Etienne (42) 2014 - FCBA Headquarters, Champs-sur-Marne (77) 2013 - Stade Jean Bouin, Paris Legal notices - Administration - © Copyright Léon Grosse News Agencies and subsidiaries Group Group Activities Key figures Organization Sustainable development History References By use By know-how Recruitment Why join us? Build your career Trainee space Beginners area Experienced space Discover our professions Isovoile Isovoile, innovation Isovoile, the principle Isovoile, the movie Isovoile and RT2012 An Isovoile site A technical and economical process English The group Research and Development Our Business Key figures Organization