Dudnyk is a product of the Kremin Kremenchuk and Metalurh Zaporizhzhia youth sportive school systems.
In August 2019 he was signed by Zorya Luhansk and he made his debut for this club in the Ukrainian Premier League as a second half-time substituted player in the winning home match against FC Oleksandriya on 9 May 2021.
[1] While playing for Zorya in Ukrainian Premier League Under-21 and Under-19 he featured in 60 matches and scored 2 goals.He signed with Kremin in February 2022 for a year and a half contract.
[2] Dudnyk moved to Czech Republic to a Bohemian Football League club Baník Sokolov in 2022.
[4] Dudnyk moved to Ukrainian First League club Kremin Kremenchuk during the winter break.