He previously played for the San Jose Sharks of the National Hockey League (NHL).

Born in Bonnyville, Alberta, Pasichnuk played with the Bonnyville Pontiacs in the Alberta Junior Hockey League (AJHL) before spending four seasons with the Arizona State Sun Devils.

[1] He signed an entry-level contract as a free agent with the Sharks on March 31, 2021.

[2][3][4] He made his NHL debut on April 28, 2021, in a 4–2 win over the Arizona Coyotes.

[5] As a free agent following two seasons within the Sharks organization, Pasichnuk paused his professional career in returning to Alberta and playing Senior men's hockey with the Bonnyville Pontiacs of the NCHL for the 2022–23 season.