Padres scouting director Jaron Madison is leaving the team to join the Cubs in the same position, a baseball source said Friday.

Madison, 36, has been San Diego's scouting director since December 2009. During his time with the Padres, the club's farm system has improved dramatically, thanks to an influx of talent that includes draft picks such as Jedd Gyorko (2010); Cory Spangenberg, Joe Ross and Austin Hedges (2011); and Max Fried, Zach Eflin, Travis Jankowski and Walker Weickel (2012). Madison previously worked as an area scout for the Padres and Pirates and as an assistant scouting director for the Padres and Cardinals.

Madison was hired as San Diego's scouting director by then-Padres GM Jed Hoyer and vice president of scouting and player development Jason McLeod, who now hold those positions in Chicago.

The Cubs have yet to officially announce Madison's hiring or what will become of Tim Wilken, their current director and one of the game's most respected scouts.

Aug. 11 update: The Cubs have promoted Wilken to special assistant to president Theo Epstein and Hoyer. In his expanded role, Wilken will continue to evaluate players for the draft while also adding major league, professional and international scouting duties.