In 2004 she joined the Sustainable Development team of the Bank Caisses d'Epargne. In addition to her position within the Caisses d'Epargne group, she was president of the Association for Transparency and Labelling of Financial Products (ATEPF).
In 2012, Marie-Christine joined Financière de l'Echiquier as Head of Socially Responsible Investment. She lectures on issues of sustainable development in several institutions (Sciences Po, University Paris Est, CFA Descartes).
Since 2013, Marie-Christine has joined WWF France as Director of the Corporate Engagement team.