Born in Blois, where he played his first and only game, Aladji joined AS Monaco in the summer of 2021. Part of the 2006 generation, the lanky defensive midfielder is a towering presence in front of the defence. Winner of the Gambardella Cup in 2023, the player played 29 matches and scored four goals for the U19s during the 2023-2024 season. He then joined the Elite Group during the 2024-2025 off-season. After a promising second half of the season, he was rewarded with a selection for the French U20 team to compete in the Maurice Revello Tournament. Starting in the final, the young French team defeated Saudi Arabia to add a 14th title to their list of achievements in the competition.