Nuno Félix, who is unrelated to Hugo and João Félix, joined Benfica's academy from Portimonense in 2016 after four seasons at the Algarve club, and signed his first professional contract in September 2020. He worked his way up through the youth sides to Benfica B.

He is a right-footed defensive midfielder, used mainly as a holding player in front of the back four.

He spent most of 2024/25 with the B team in Liga Portugal 2 but was registered with the first-team squad from November and made three senior appearances, all as a substitute. His debut came in February 2025 in the closing minutes of a league match away to Santa Clara, and he added a second league appearance and one in the Taça de Portugal.

He has played for Portugal at under-18, under-19 and under-20 level.