During his playing days, Das appeared with teams like Howrah Union, Aryans, Mohun Bagan, East Bengal, Tata SC, in the seventies.

[5] In 2005, after the departure of Sukhwinder Singh, Das was reportedly one of the candidates put up for the vacant India senior head coach position.

[9] Das was eventually relieved of his duties on 6 March 2006 after Mohun Bagan found themselves in ninth place in the NFL table.

[10] On 20 August 2015 it was announced that Das would become the "Head of Youth Development" at newly promoted I-League club, Aizawl.

The club managed by Jahar Das emerged as the first small side since 1958 to win the Calcutta Football League top division.