Career
Czarnik played four seasons of National Collegiate Athletic Association Division I hockey for the Miami RedHawks (2011–2015). In his sophomore year at Miami University, Czarnik"s outstanding play was rewarded with a selection to the 2012-2013 CCHA All-Conference First Team. On June 24, 2013, prior to the start of his junior season, Czarnik was named captain of the RedHawks by head coach Enrico Blasi.
He held this position through the end of his senior season.
Days after Miami was eliminated from the 2015 National Collegiate Athletic Association Division I Men"s Ice Hockey Tournament and his college career had come to a close, Czarnik signed an entry-level deal with the Boston Bruins on March 31, 2015. He was assigned to the Bruins" AHL affiliate, the Providence Bruins.
Czarnik is the cousin of Norfolk Admirals center Robert Czarnik.