Born in Corumbá, Mato Grosso do Sul,[1] Ronald began his career with hometown side Corumbaense.
He made his first team debut at the age of 17 on 2 February 2019, coming on as a second-half substitute in a 2–0 Campeonato Sul-Mato-Grossense away win against Operário de Dourados.
Ronald started to appear in the first team of Dragão in January 2021, but was loaned to Grêmio Anápolis on 24 February 2021, until the end of the Campeonato Goiano.
[4] After helping the latter side win the competition for the first time ever with two goals (one of them against his parent club) in 14 appearances, he signed a permanent deal with Grêmio Anápolis and subsequently returned to Atlético for the Série A, on loan.
[10][11] He was praised by head coach Luke Williams after playing for the team,[12] whilst Ronald said that he wanted to be successful for his family in Brazil.