Raj Kumar, born on March 1, 1978, is an Indian Administrative Service officer from the 2010 batch, serving in the Bihar cadre. He holds a B.A. in History and is proficient in English and Hindi. Throughout his career, he has held key positions including Commissioner, Managing Director, and District Magistrate & Collector. Currently, he serves as the Secretary of the State Transport Department, Bihar, a position he has held since November 30, 2025. Raj Kumar continues to contribute to the administrative framework of Bihar in his ongoing service.