He was first integrated into the first team towards the end of the 2013 Campeonato Brasileiro Série A, remaining an unused substitute in three matches starting with a 1–1 draw against AA Ponte Preta at the Maracanã Stadium on 19 October.

On 31 January 2016, he made his debut in the Campeonato Carioca, starting in a 3–1 loss at Volta Redonda Futebol Clube in the first game of the season.

[2] On 5 December 2018, Léo Pelé moved to São Paulo FC on a four-year deal for a fee of $3 million.

[3] On 21 December 2022, Léo Pelé was transferred to Vasco from São Paulo FC, in a R$16 million deal for a 3-year contract.

[4] For the 2025 season, Leo Pelé left Vasco for Athletico Paranaense, who acquired his pass for R$12.3 million.