Marlène Dolveck holds an Executive MBA from EDHEC business school and a CESB senior banking management degree from HEC business school. She began her career as an economics teacher before joining Crédit Agricole and then the La Poste group, specifically La Banque Postale, where she was a member of the Executive Committee. Since 2017, she was Director of Omnichannel and a member of the HSBC France Retail Banking Executive Committee.

In January 2020, she joined SNCF Gares & Connexions as Managing Director and became a member of the SNCF Group's Executive Committee. In January 2024, she became Deputy Managing Director of the SNCF Group in charge of Transformation in addition to her duties as Managing Director of SNCF Gares & Connexions.