Matysik is the youth product of Jagiellonia's academy.[3][4] He made his debut for Jagiellonia Białystok II on 7 November 2020, in a 2–1 victory over Pogoń Grodzisk Mazowiecki. Three months later, on 7 February 2021, he made his debut in Ekstraklasa in a 2–0 loss over Wisła Kraków. Matysik scored his first goal for Jagiellonia's reserve team on 27 February, during a walkover victory over Ruch Wysokie Mazowieckie,[5] which ended as a 1–1 draw.[5][6] On 4 March 2022, he scored his premiere goal in Ekstraklasa in the 48th minute of a 1–1 draw against Stal Mielec.[7]