In 2004 he transferred to North Dakota State University,[1] where he was selected First Team All-Great West Football Conference as a senior.
In 2006, he signed as an undrafted free agent with the Green Bay Packers, however he did not make the roster.
[2] In 2006, Cooper started his coaching career at his alma mater working as a graduate assistant until 2008.
In 2020 Cooper joined Nick Rolovich’s inaugural staff at Washington State as the defensive ends coach.
[6] In 2022 he was retained as the team's edges coach and added the title of defensive run game coordinator.