He made his professional debut in the Italian top flight on 3 November 1929, with A. Inter, in a 3–2 home win over Cremonese.

He made his international debut on 28 March 1920, starting in a 3–0 friendly away loss to Switzerland, at the age of 18 years, 351 days.

[1][2] Conti is either the second or third-youngest player ever to start a match for Italy, behind only Eugenio Mosso, and possibly Rodolfo Gavinelli.

Mosso made his only international appearance for Italy on 5 April 1914, starting in a 1–1 friendly away draw against Switzerland, at the age of 18 years, 238 days.

[1][6][7][8] Conti later took part at the 1924 Summer Olympics with the Italy national football team.