 In the 2009 USL final he was influential in Montreal's success, scoring the game-winning goal in the second leg of the Championship series against his former Whitecaps.On January 20, 2010 Gjertsen signed with San Jose Earthquakes of Major League Soccer.Gjertsen remained with San Jose through 2012 but after missing that entire season due to R. Patellar Tendon surgery he was released on November 28, 2012.