Quinteros was signed by Inter Miami in February 2020. The defender joined from the Valencia CF Academy in Spain and subsequently loaned to Club Bolívar in Bolivia’s first division for the 2020 season.
The Spanish-Bolivian dual citizen made two UEFA Youth League appearances for Valencia in his last season with the club.
The left-footed defender has been a regular member of the Bolivian youth international setup, playing in matches for the U-20, U-21 and U-23 teams. Quinteros played every minute of Bolivia’s four games in the 2019 Sudamericano U-20 in Chile, including a matchup against new Inter Miami teammate Christian Makoun. He also featured as a fullback in the Bolivian U-23 team’s four CONMEBOL Pre-Olympic Tournament matches, starting in each one.