Born in Brazil, Antinoro moved to Canada at age 12.[1] After attending a training session with the ARS Lac Saint-Louis, he joined CS Mont-Royal Outremont, where he played for a season, before joining the CF Montréal Academy.[2] In December 2021, he received a scholarship from the Fédération de l’athlète d’excellence du Québec for his academic and athletic excellence.[3] In March 2022, he was loaned to the youth side of Italian club Bologna to participate in the Torneo di Viareggio.[4][5]
In February 2023, he signed a two-year professional contract with Canadian Premier League club Atlético Ottawa.[7][8] He made his professional debut on April 15, 2023, against the HFX Wanderers.[9] On June 25, 2023, he scored his first professional goal, scoring 22 seconds into the match against Forge FC, which was the second-fastest goal (by milliseconds) in league history.[10][11] In December 2024, he signed a three year extension through 2027.[12][13] Ahead of the 2025 season, he went on a training stint with their affiliate club in Mexico, Atlético San Luis.[14]