Mondal stayed with East Bengal until 2005, when he signed for Mumbai side Mahindra United. While with Mahindra United Mondal won another NFL title. He also won a Federation Cup while with the side. After a season with Mahindra United, Mondal moved back to Kolkata to sign with East Bengal rivals, Mohun Bagan. On 22 December 2008, Mondal helped Mohun Bagan win their only national title while with the club, the Federation Cup. The club defeated Dempo to win their thirteenth Federation Cup title and Mondal's second. In September 2010, Mondal was awarded the Arjuna Award.