Bastian played at the midget level with the Brantford Jr. B Stars in the Greater Ontario Junior Hockey League after he was selected 127th overall in the 2013 OHL Priority Draft by the Mississauga Steelheads.

[2] During the 2018–19 season, after 43 games with the Devils' AHL affiliate in Binghamton, Bastian received his first recall to New Jersey on January 19, 2019.

[3] He made his NHL debut that night, getting into his first fight against Josh Manson in a 3–2 loss to the Anaheim Ducks at the Prudential Center.

[8] Remaining on the Kraken's opening roster for the 2021–22 season, Bastian in a fourth-line role added a physical edge and appeared in 12 games with the expansion club, scoring his lone goal for the team in a 5–4 loss to the Arizona Coyotes on November 6.

[12] On February 22, 2024, Bastian left the game after two periods after suffering an injury as the Devils lost 5–1 to the New York Rangers.