A graduate of Sciences Po Lille and fluent in English and German, Marianne began her career at the European Parliament, working in the Committee on Industry, Research, and Energy. She then joined the Cercle de l’Industrie (which later merged with GFI to become France Industrie), an association representing large industrial companies to national and European institutions, where she served as Head of Public Affairs, focusing on innovation, energy, and climate issues.

With a growing interest in sustainable healthcare, Marianne also earned the Corporate Social Responsibility (CSR) certificate for healthcare companies from Mines – PSL Executive Education in 2024.

In 2016, she joined Nextep as a consultant in the Public Affairs team. Now a Manager, she supports healthcare stakeholders in defining and implementing their public affairs, institutional communication, and CSR strategies.