After good appearances for Dukla Prague's B-team, he got his official debut for the club in a Czech First League against Sigma Olomouc on 29 September 2017.

[3] In the 2021–22 Czech First League, Douděra scored 10 goals and registered 4 assists for Boleslav in 31 matches.

[4] He made his competitive debut for the club in a 4–0 away win against Gibraltarian side St Joseph's F.C.

In March 2023, he received his first call-up to the Czech senior squad for UEFA Euro 2024 qualifying Group E matches against Poland and Moldova.

[6] Douděra scored his first goal for the national team in November 2023 in a 3–0 victory against the latter opponent,[7] where he also debuted.