The 1.96 meter tall and 95 kilogram shooting guard played college basketball at Virginia Military Institute and the University of Missouri. In the 2001/2002 season Conley wrote a small piece of American basketball history when he top scorer of all college basketball players in the NCAA Division I was just under 30 points per game as a freshman so-called first. Halfway through his second year at the Virginia Military Institute Conley moved to the University of Missouri, where he was not eligible to play under NCAA rules the second half of the season and had to stop. In the next season he came to 7.6 points and 3.4 rebounds per game ( an average of 18.2 minutes ), the fourth and last year, then on an average of 10.2 points and 5.9 rebounds.
Conley's first stop as a professional basketball player were the Telekom Baskets from Bonn, where he played in the German Basketball Bundesliga 2005-2008. In his third season in Bonn him by Head Coach Mike Koch, the task of the team captain was transferred. Due to ongoing injury problems, he signed a new contract in Bonn and in 2008 went back to the U.S. in order to devote himself entirely to his rehab to sign a new contract in professional basketball later. In early 2009 Jason Conley signed a contract with the Finnish first division Namika from Lahti and contributed with 16 points and 8 rebounds on average significantly to winning the national championship in 2009. For the 2009/2010 season under Jason Conley wrote a contract for one year at WBC Raiffeisen Wels from the Austrian basketball league.
In early 2011 moved back to Finland and Conley received a contract with the local first division Kataja BC from Joensuu to the end of the season. Since the 2012/2013 season he played for NMKY from Lappeenranta, which also play in the top league in Finland.
- German Vice Champion 2008 with the Telekom Baskets Bonn
- Finnish Champion 2009 Namika Lahti