[2] He made his professional debut for Luzern in a 1–0 Swiss Super League win over Neuchâtel Xamax on 26 September 2019.
On 15 February 2021, Maleš moved on a six month loan to Swiss Super League side FC Basel.
[7] He joined Basel's first team during the winter break of their 2020–21 season under head coach Ciriaco Sforza.
[8] He scored his first goal for the club on 3 March in the home game as Basel played a 1–1 draw with the Young Boys.
However, on 9 July 2021, Maleš returned to Basel for their 2021–22 season under their new head coach Patrick Rahmen for a further two-year loan, with an option for the club of a definitive purchase.