Cuno Tarfusser served from 1985 to 2001 investigative prosecutor in charge of the investigations and prosecutions, among others, of organized crime and terrorism.
From 2001 to 2009, he was the head of the Office of the Prosecution in Bolzano where he achieved, first judicial office, the ISO 9001 quality certification after reforming the administration on the basis of managerial criteria. From 2009 to 2019, he served as a judge of the ICC. Assigned to both Chambers of the Pre-Trial division he dealt with all cases the Court was confronted with. From January 2016 to July 2019, he presided over the trial against the former President of Ivory Coast Laurent Gbagbo acquitting him and his co-accused Minister of Labor and Youth Charles Blé Goudè from all charges.