Jon Clark is in his third season on the Nebraska defensive coaching staff in 2017.
In 2016, Clark served as a defensive assistant, focusing on the Husker secondary, and assisted with an NU defense that was among the nation's most improved units against the pass. Clark served as a graduate assistant coach in 2015 and helped the Husker secondary continue to make strides throughout the season. The unit saw seven different players in the starting lineup and a total of 23 starts by either freshmen or sophomores.
Clark spent the 2014 season as the safeties coach at East Texas Baptist University, and he was the defensive coordinator and secondary coach for Canyon State (Ariz.) Academy High School in 2013.
Prior to Canyon State Academy, Clark was a student assistant at Arizona State and helped with the development of defensive backs. During his coaching stint at Arizona State, the team appeared in the 2011 MAACO Bowl vs. Boise State.
Before coaching, Clark was a defensive back for Arizona State from 2007 to 2010. Clark graduated in 2012 with a degree in family studies.