Born in Itapecerica da Serra, São Paulo, Diógenes began his career as a centre-back, but soon moved to goal.

[2] He played for the youth sides of Taboão da Serra, Internacional and Avaí before agreeing to join Santos in August 2020;[3] he was only registered in October, after the club's transfer ban was lifted.

[6] Diógenes ended the 2021 season as third-choice after the arrival of Jandrei, and remained in that role in the following year, after John recovered.

[8] After spending the 2023 season behind João Paulo and Vladimir, Diógenes was one of the several players deemed surplus to requirements for the 2024 campaign, after the club's first-ever relegation.

[11] Diógenes made his first team debut with Peixe on 28 October 2024, starting in a 2–0 Série B home win over Ituano.