Marlène Rosano-Grange holds a Master's degree in Public Law from Sciences Po Bordeaux, a Master's in Sociology from the University of Granada, as well as both a Master's and a PhD in International Relations from Sciences Po Paris. She spent three years on an academic exchange at Princeton University, followed by a postdoctoral fellowship at the University of Oxford, before joining the Printemps/UVSQ laboratory for postdoctoral research on the financialization of agricultural land and green finance.

Her research focuses on international political economy, European integration, and the sociology of finance. She currently teaches in the research Master's program in Political Science at Sciences Po Bordeaux, having previously taught numerous courses at Sciences Po Paris and the University of Paris 8.