He began collaborating with Lessona Law Firm in 1999 and became a partner in 2009.

Dario graduated with highest honors in Law from the University of Florence, with a thesis in Administrative Law supervised by Prof. Carlo Marzuoli, for whom he subsequently carried out research and academic work.

He has been registered with the Bar Association since 2003 and, since 2015, has been admitted to practice before the Court of Cassation and the Higher Courts.

He primarily works in the fields of public and private procurement, public services, publicly-owned companies, business and commercial activities, public housing, and public concessions in general. He regularly provides legal representation in matters of accounting liability.

In addition to litigation, he provides ongoing consultancy, supporting clients both in defining operational strategies aimed at achieving their objectives and in drafting the documents required for their activities.

He is a member of the Tuscan Society of Administrative Lawyers.