He moved on to become an Assistant to US Men’s National Team Head Coach Bob Bradley. Nowak also served as Head Coach of the U-23 National Team, advancing to 2008 Olympic Games in Beijing. Together with Bradley, they coached over 70 players and orchestrated the USA’s championship run to a title in the 2007 CONCACAF Gold Cup and Mandela Cup. On 28 May 2009, Nowak resigned from his position with the US Men's National Team.