Hartmut Riester is a board member at Novelty Media. Hartmut was previously the CEO at dentsu turkey from April 2008 to March 2022, MD Carat Turkey from January 2006 to December 2008, and CEO Turkey from April 2008 to June 2011. Hartmut was also the CEO at Dentsu Aegis Network Turkey from July 2015 to October 2020. Prior to that, they were the MdGL at Vizeum Germany from January 2001 to December 2005, media director at Leo Burnett Frankfurt from January 1998 to December 2000, and media planner at HMS Carat Germany from January 1994 to December 1998.