DRDO Jobs Recruitment 2020 Scientist B. DRDO recruitment to the post of Scientist ‘B’ in Defence Research & Development Organization (DRDO), and for the post of Scientist/Engineer ‘B’ in Aeronautical Development Agency (ADA), was published on the website of RAC (https://rac.gov.in) on 13th May 2020. The basic details of the advertisement are summarized below: How