Marie-Claire Janailhac-Fritsch founded Laboratoire Nature Et Technique SARL and Institut De Recherche Et D'Innovation Scientifique SARL. Currently, she holds the position of Chairman of Hellébore SAS and Chairman at Guerbet SA.
She is also on the board of Biom'Up SA and Member of Institut Français Des Administrateurs.
In her past career she was Chairman for Théâtre du Châtelet and Manager for Fj Immo SARL.
She received an undergraduate degree from École des Hautes Études Commerciales de Paris.