He holds the national record for the longest jump, which was established on 1sh April 2023 in Planica, Slovenia, on Letalnica bratov Gorišek flying hill where he scored 213.5 m (700 ft) in team event.

[1] Marusiak started his international career by representing Ukraine at the 2017 European Youth Olympic Winter Festival in Erzurum, Turkey.

[3] Marusiak debuted at the Ski Jumping World Cup on February 13, 2021, in Polish Zakopane, where he was 49th on large hill.

As of January 2022, his best individual Continental Cup result was 38th on March 14, 2021, in Polish Zakopane.

[4] In 2023, at the ski flying event in Tauplitz, he got his first World Cup points in his career with 26th place.