[5] Called up to the first team by new manager Jorge Sampaoli, Sandry made his debut with the main squad on 31 January 2019, coming on as a late substitute for goalscorer Derlis González in a 4–1 Campeonato Paulista away routing of Bragantino.

[7] Sandry made his Série A debut on 8 December 2019, replacing goalscorer Carlos Sánchez late into a 4–0 home routing of Flamengo.

[8] He made his Copa Libertadores debut the following 20 October, replacing Jobson in a 2–1 home win against Defensa y Justicia.

[12] Back to action in November, he returned to feature regularly for the side before suffering a facial injury in February 2023; he recovered in April, but had an infection in the region in May.

[15][16] On 20 September 2019, he was included in Guilherme Dalla Déa's 21-man list for the 2019 FIFA U-17 World Cup,[17] featuring mainly as a substitute as his side lifted the trophy for the fourth time.