[1][2] Mazerolle has also been an assistant professor at the University of Cincinnati's Department of Criminal Justice.

[4] In 1984, at the age of 19, he was a competitive hockey player and goaltender for the Northside Pizza Delight Caps in the Southern New Brunswick Junior Hockey League, while studying at the University of New Brunswick.

[1] At the time of receiving his PhD, he was an assistant professor at the University of Cincinnati's Department of Criminal Justice.

[6][7] In 2006, he became a professor and director of the Violence Research and Prevention Program at Griffith University, where he would later serve as the head of the Key Centre for Ethics, Law, Justice and Governance.

[1][10] In 2023, he was reappointed to serve at the University of New Brunswick for an additional five year term,[11] which is set to begin on July 1, 2024.