Jost teamed up with Pernelle Carron in the summer of 2005. They won a bronze medal at one Grand Prix event, the 2007 Skate Canada International, as well as bronze at the Winter Universiade and gold at the Karl Schäfer Memorial. Carron/Jost competed at three European Championships, finishing as high as sixth (2009), and placed ninth in their only appearance at the World Championships, also in 2009. Nationally, they were bronze medallists in 2006 and 2007 and silver medallists in 2008 and 2009. Carron ended their partnership in April 2009.