Denys Chevallier

Denys Chevallier has extensive experience in the cleaning and hygiene services sector, currently serving as Responsable Bureau d'études at Groupe ESSI Propreté since September 2015. Previous roles include Chargé d'études at STN GROUPE, Française de Services, and various positions at DERICHEBOURG Multiservices and Onet Propreté et Services. Denys began the professional journey as an agent and trainee at GSF and holds multiple certifications, including a Titre Certifié de Niveau I in Manager de la Stratégie Commerciale and Titre Certifié Niveau II in Responsable de Service Hygiène et Propreté. Academic qualifications further include a Licence in Physique-Chimie and a BTS in Hygiène Propreté Environnement, showcasing a solid foundation in both management and technical aspects of the field.