Comités olympiques européens
Kožulj retired from competitive swimming at the 2008 European Short Course Swimming Championships in Rijeka. In March 2008 he was appointed director of the Croatian national swimming team, replacing acting director Tomislav Karlo. In September 2009 Kožulj was elected to the European Olympic Committees Athletes' Commission. He was also elected to be a member of the European Olympic Committees' Marketing Commission.