Raised in Red Bank, New Jersey, Farinacci played prep hockey for the Delbarton School before transferring to Shattuck-Saint Mary's.
[citation needed] Farinacci had a successful freshman year with the Crimson, scoring 10 goals and 12 assists for 22 points in 31 games.
Unfortunately, Farinacci and the rest of the team's season was abruptly cancelled during the 2020 ECAC Hockey Tournament due to the COVID-19 Pandemic.
Farinacci also played on the international stage during the season, representing the United States at the 2021 World Junior Ice Hockey Championships, where he scored five goals and two assists in seven games en route to the gold medal.
[6] After returning to action on January 13, 2023, Farinacci put up great numbers and had his best statistical season at Harvard yet, given his missed time.
Despite this, Harvard still received a bid to the 2023 NCAA tournament, where they would lose 8–1 in the first round to the Ohio State Buckeyes, in what would be Farinacci's final game of his college career.
[7] He became a highly coveted collegiate free agent, and ultimately signed a two-year entry-level contract with the Bruins on August 16, 2023.
[9] Farinacci would stay in the AHL for the entirety of the season, finding success with the P-Bruins, scoring 12 goals and 26 assists for 38 points in 71 games.