Zamula began playing ice hockey at the age of two, and says that his favorite player as a child was Victor Hedman.

[1] The Regina Pats of the Western Hockey League (WHL) selected Zamula 60th overall in the CHL Import Draft.

[2] Zamula made his NHL debut on 27 April 2021, playing on a defensive line with Travis Sanheim in a game against the New Jersey Devils.

[3] He became the fifth Flyer to debut during the 2020–21 NHL season, following Maksim Sushko, Tanner Laczynski, Wade Allison, and Jackson Cates.

He scored 2 goals and 3 assists in 7 games with Russia, who eventually lost the gold medal match to Canada.