Rusyn made his debut for the Dynamo's senior squad in a match against Albanian Skënderbeu Korçë in the 2017–18 UEFA Europa League on 23 November 2017 and scored on 90'+1 minute.

[2] Also he made his debut in the Ukrainian Premier League for Dynamo Kyiv on 26 November 2017, playing in a winning match against FC Stal Kamianske.

[4] On 23 February 2021, Rusyn moved to Polish club Legia Warsaw, on a loan deal until December 2021,[5] joining his compatriot Artem Shabanov.

[6] On 6 April 2021, after refusing to partake in Legia II's match against Legionovia Legionowo three days prior,[7] Rusyn was moved to the reserve team for two weeks.

[12] In October 2023, Rusyn received his first call-up to the Ukraine senior national team for two UEFA Euro 2024 qualifying matches against North Macedonia and Malta.