[5] In January 2023, a goal Smit scored in a five-a-side indoor game went viral due to its unusual nature, as he beat the outrushing goalkeeper with shot rebounded from the side wall.
[6][7][8] Later that month, Smit made his professional debut for Jong AZ in the Eerste Divisie in a home match against Helmond Sport, on January 23, 2023.
[9][10] With AZ under-19s playing in the UEFA Youth League he was part of the team that beat Barcelona and Real Madrid on consecutive rounds to reach the semi-finals in March 2023.
[11][12][13] Smit scored a long range goal in the UEFA Youth League last-sixteen tie against Barcelona that brought praise.
[17] He made his UEFA Europa League debut for AZ Alkmaar on 7 November 2024 in a 3-1 home win against Fenerbahçe, scoring the second goal and being credited with an assist for the third.