Attended Florida State University on a golf scholarship. During his collegiate career, earned four individual victories as well as leading Florida State to their first ever Conference title in the School’s history. His biggest individual win came at the ACC Regional Championship in 2007, a collegiate ‘Major’. In recognition of his fantastic college record, he followed the likes of Paul Casey and Luke Donald, as he was named ‘First Team All American’, an award honouring the top ten college golfers of the year.
Jonas was also a two time European Palmer Cup team member. His appearance in 2008 was his last appearance as an amateur, he led the Europeans to a 14-10 victory over the Americans as he earned a maximum of four points by winning all of his matches. At the event's close, Jonas announced his intention to turn professional and signed a representation agreement with Gaylord Sports Management, Phil Mickelson’s Management company. His first event was the Barclays Scottish Open at Loch Lomond, where he received a sponsor’s invitation.