Born in Curiaú, a quilombola neighborhood in Macapá, Amapá,[1] Igor Paixão joined Coritiba's youth setup in 2014, after a trial period.

[3] Igor Paixão was promoted to the first team in January 2019, after playing in the 2019 Copa São Paulo de Futebol Júnior.

[4] He made his professional debut on 27 January, coming on as a second-half substitute for Giovanni in a 0–0 Campeonato Paranaense home draw against Toledo.

[9] Upon returning, Igor Paixão started to feature regularly for Coritiba under manager Gustavo Morínigo, and scored his first goal for the club on 28 March 2021, netting the opener in a 2–1 home win over Cascavel CR.

[14] On 7 April 2024, he scored a brace for his club in a 6–0 victory over Ajax in De Klassieker, to be their opponent's worst defeat in the Eredivisie history.