He joined Uberlândia's youth setup after a trial period, and moved to Sociedade Esportiva Patrocinense [pt] for the 2015 season, after finishing his formation.
[3] In 2016, Ademir signed for Clube Atlético Patrocinense, and helped the side in their back-to-back promotions from the third to the first division of the Campeonato Mineiro.
[7] In October of that year, he renewed his contract until December 2021,[8] and finished the season with eight league goals and a promotion back to the main category.
In 2021, Ademir scored 13 goals in the Série A season, playing a crucial role in América's first ever qualification for the Copa Libertadores.
[9] On 19 September 2021, Atlético Mineiro's president Sérgio Coelho confirmed that Ademir agreed to a pre-contract with the club, effective as of the following 1 January.