Sebastien Jonnet has extensive experience in the energy sector, currently serving as the Directeur du Groupe maintenance réseaux Normandie at RTE Réseau de Transport d'Electricité since September 2005. Prior roles at RTE include Adjoint au directeur de groupe for Groupe Maintenance Réseaux Bearn, Responsable de Maintenance Reseau infrastructures for Groupe Maintenance Réseaux Forez Velay, and Manager de projets, focusing on significant projects such as the reconstruction of 400 kV substations. Additional expertise includes judicial expertise and litigation. Earlier career experience at ENEDIS involved serving as Chef d'équipe de techniciens clientèle, overseeing technical teams and managing customer interventions. Sebastien Jonnet holds a degree from ICN Business School in Organizations and Management and a BTS in Electrotechnique from Lycée Jean Dupuis.