Vidal began her career as a biochemist for Virbac.[1]
Vidal joined her alma mater, the University of Nice, as an associate professor in 1995.[2] She became a full professor in 2002, and she served as the chair of the biology department from 2005 to 2008.[1] There is no evidence that Vidal officially directed a thesis;[3] she published one scientific peer-reviewed paper as last author[4] and has an h-index of 14 (retrieved on Web of Science, February 2021).
She was the vice dean of its college of sciences from 2007 to 2009, and its dean from 2009 to 2012.[1][2] She succeeded Albert Marouani as the university president in 2012.[1][5] During her first term, Vidal founded Université Côte d'Azur, a consortium consisting of the university, and local business schools and research centres, to increase the international attractiveness of the university.[6] She was re-elected as president in 2016.[2]
Vidal was opposed to the circulaire Guéant, a failed proposal by Interior Minister Claude Guéant whose aim was to curtail the ability of non-EU foreign students to stay in France after the completion of their studies.[1] She suggested the University of Nice should not discriminate on the basis of national origin or financial resources.[1]