Fini entered the
youth sector of
Genoa in 2013, and subsequently came through the club's ranks: in July 2022, he signed his first professional contract with Genoa and started training with the first team, shortly after joining the under-19 squad on a stable basis. At the start of the 2023–24 season, Fini was promoted to Genoa's first team by manager
Alberto Gilardino. On 22 October 2023, he made his professional debut for the club, coming on as a substitute for
Stefano Sabelli in the 87th minute of a 2–0
league defeat to
Atalanta: in the process, he became the second 2006-born player to make his
Serie A debut, only after
Simone Pafundi. On 22 August of the same year, Fini joined
Eerste Divisie side
Excelsior on a season-long loan. On 26 January 2026, Fini was loaned by
Frosinone in
Serie B. == International career ==