After completing his law studies, Mehdi Benani worked for several years as a clerk with the Tribunal des baux and then with various Justices de Paix offices in the canton of Vaud. Keenly aware of international issues, Mehdi Benani rounded off his training with a Master's degree in political science from a London university. Mehdi Benani then worked as a trainee lawyer in a firm particularly active in labour law and criminal law, before working as an associate with another well-known Lausanne law firm in the same fields. He joined Kasser Schlosser avocats as an associate at the end of 2023.