Stefan Effenberg is a former Germany international. Stefan Effenberg has been appointed to his first coaching position, taking over 2. Bundesliga club Paderborn on a contract until 2017. Effenberg, 47, was confirmed as the new head coach of the German second division club on Tuesday after negotiations with club bosses were concluded in Mallorca. "I've been thinking seriously about becoming a head coach for a while now," Effenberg said.