Vineet Nayyar, vice-chairman and managing director of the company will take over the operational responsibilities as the company's CEO, a press release issued here said.
Nayyar had served as the chief executive till last year, when Kalra took over as the CEO, it added.
"Sanjay has been a key player in Tech Mahindra's growth. The board would like to acknowledge his vision, leadership and dedication in enabling the company achieve a premier position in the telecommunication vertical," Tech Mahindra Chairman, Anand Mahindra, said.