[6] While on leave from the Government of India, he earned a master's in computer science from University of California, Riverside in 2002[7] and subsequently a PhD from IIT, Delhi.

[8] Ram Sewak Sharma joined the Indian Administrative Service (IAS) in 1978.He belongs to the Jharkhand cadre.

He has authored a book titled The Making of Aadhaar: World's Largest Identity Platform (ISBN 9390356121) describing this project.

[15] As the TRAI chairman, his goal to gradually reduce Interconnect Usage Charges earned him acclaim from some and criticism from others.

Critics allege that the decision is biased towards Jio while those defending TRAI claim that reducing these charges was necessary for the continuous growth of the sector.

Dr. Sharma was called back from retirement to take the responsibility of developing and executing the CoWIN or the Covid-19 Vaccine Intelligence Network.

[23][24][25] In 2018, Sharma dismissed concerns regarding privacy and potential misuse of India's national biometric ID, and disclosed his Aadhar number on twitter, challenging users to “do any harm to me.” and stating that the purpose of the challenge was "... to debunk the theory that Aadhaar compromises the privacy of the person.”[26][27] Following this, individual researchers were able to locate his personal address, the number of the mobile phone he used as well as an alternate phone number that he used, his Whatsapp profile picture, his voter identification card and his tax identification card (PAN card).