Career
During his professional career, he has represented India and is known for his dangerous free-kicks. Previously, he has been youth coach at Mahindra United before they closed down & Mohun Bagan. After his days as a football player Kashyap went into coaching.
His first job was as the Mahindra United U-19 coach.
During his last season with the Mahindra Youth Team he guided them to the Super Division title in the Mumbai Football League. Before the 2010-2011 I-League season Santosh signed for I-League club Air India Football Club. Despite the low amount of funds that were given to Santosh he still managed to keep Air India out of the relegation zone.