Volyn Lutsk Martynyuk made his professional debut for Volyn Lutsk in the
Ukrainian First League during the 2019–20 season. He spent three seasons with the club, becoming a reliable defensive option. During the 2020–21 season, he also appeared for the reserve team, Volyn-2, in the
Druga Liga to maintain match fitness.
Oleksandriya In July 2022, Martynyuk moved to
FC Oleksandriya on a free transfer. He made his
Ukrainian Premier League debut shortly after. His most successful period at the club came during the 2024–25 season, where he appeared in 29 league matches, earning praise for his crossing ability and defensive positioning.
Metalist 1925 Kharkiv On 1 July 2025, Martynyuk signed a three-year contract with
Metalist 1925. He established himself as the first-choice left-back during the first half of the 2025–26 campaign. == International career ==