[citation needed] Guimarães was promoted to the main squad in the 2017 campaign after impressing in the year's Copa São Paulo de Futebol Júnior.

[4] Guimarães made his Série A debut on 17 June 2017, coming on as a second-half substitute for Deivid in a 1–0 away defeat of Atlético Goianiense.

[6] Guimarães scored his first senior goal on 10 March 2018, netting his team's fourth in a 7–1 home routing of Rio Branco-PR, for the year's Campeonato Paranaense.

[9] On 30 January 2022, Guimarães joined Premier League club Newcastle United on a four-and-a-half-year contract for a reported fee of up to £40m.

[10] He scored his first goal for Newcastle with a "powerful back-heel volley" in a 2–1 victory at Southampton on 10 March, on his full debut game.

[15] After Matt Ritchie's transfer to Portsmouth, on 8 August 2024, Guimarães joined Dan Burn, Kieran Trippier, Jamaal Lascelles and Callum Wilson as part of Newcastle United's leadership group.

[20] In September 2020, Guimarães was called up to the senior Brazil squad for 2022 FIFA World Cup qualification matches against Bolivia and Peru on 9 and 13 October 2020, respectively.