Jon Guynes is in the first year as a graduate assistant coach at UConn in 2012. Guynes had been on the Holy Cross staff since March 2012 as the outside linebacker coach. Hs time at Holy Cross was his second stint the Crusader staff as he was also at the school for the 2008 and '09 seasons. He was the defensive line coach at Assumption in 2010 and '11.
Guynes helped lead the Crusaders to an overall record of 7-4 and a second place finish in the Patriot League in 2008. From 2006-2007, he was the linebackers coach at Iona College, where he helped lead the team to a 7-4 record in 2007. During his time at Iona, Guynes guided the career of Adam Lipski, who earned second team Mid-Major All-America honors in both 2006 and 2007, and was named the 2007 MAAC Defensive Player of the Year.
Prior to his time at Iona, Guynes served as the defensive backs coach at Muhlenberg College in 2005.
A 2005 graduate of Lehigh University, Guynes was a three-year starter at linebacker for the Mountain Hawks. He helped lead Lehigh to an overall record of 36-11 during his four seasons, including two trips to the NCAA Division I-AA playoffs.