Nordin began his international career in March 2002 in the Ski Jumping Continental Cup . At the summer competition in Falun , he won the 30th Continental Cup points for the first time. On March 2, 2003, he achieved his best individual result in the Continental Cup with 14th place in Ishpeming . As a result, however, he remained without further points. In September 2006 he started again in the FIS Cup in Örnsköldsvik , but could not convince there as 22nd and 30th. It was his last international starts.
At the Swedish Championships in 2003 and 2006 he won the title on the middle hill.
Jonas Nordin is the older brother of Carl Nordin , who was also active as a ski jumper in the until 2016.