Jean-Marie Ramirez obtained a doctorate from the University of Montpellier I after completing a thesis entitled "Leukemias induced by retroviruses in mice" directed by Dr. Marylène Mougel. A research grantee, he completed his thesis between two institutes: the Institute of Biology of Montpellier and the National Institute of Health (NIH) in Washington DC (United States). He then became a postdoctoral researcher at the Salamanca Cancer Research Center (Spain) in the team of Prof. Jesus San Miguel. Then he was a postdoctoral researcher at the University Hospital of Geneva (Switzerland) in the team of Prof. Thomas Matthes. In 2015, he was recruited as a assistant professor at the Faculty of Medicine of Montpellier in the team of Prof. John De Vos and Prof. Thierry Lavabre-Bertrand where he teaches cell biology and histology. In 2018, he joined the IBMM (F15 team: Prof. Thierry Lavabre-Bertrand) where he created his project team to develop a medical device capable of trapping tumor cells.