Antonello is a qualified lawyer, member of the Rome Bar Association, he is admitted to plead before the supreme courts.

He has gained working experience in administrative, constitutional and European Union Law, as well as in international protection of human rights.

He graduated in Law at the University LUISS Guido Carli University and obtained a PhD in Public Law at the University of Perugia.

He is the author of about 100 scientific publications. Antonello is member of ASGI and of Giuristi Democratici, and he collaborates with the Fondazione Lelio e Lisli Basso.