After winning two amateur championships and the Amateur Coach of te Year trophy with Quick Boys, Aandewiel became manager of Haarlem in 2005. On 8 February 2007, when working as a coach for HFC Haarlem, he was named as the new manager of Sparta Rotterdam to replace Wiljan Vloet at the end of the 2006-2007 season. He was sacked by Sparta Rotterdam on 11 November 2007. He joined NAC and became joint caretaker-manager, then assistant to John Karelse.
In April 2012 Aandewiel announced he would become Armenia's FC Banants' youth development manager.