[1] Born in Uberaba, Minas Gerais,[2] Bontempo joined Santos' youth setup in 2015, after a trial in his hometown.
[3][4] On 8 July 2022, he signed his first professional contract with the club, after agreeing to a three-year deal.
[7] Bontempo made his first team debut on 25 January 2025, starting in a 2–1 Campeonato Paulista away loss to Velo Clube.
[8] He scored his first professional goal seven days later, netting his team's second in a 3–1 home win over São Paulo.
[9] On 4 February 2025, Santos announced Bontempo's contract renewal until the end of 2027.