DRDO Apprentice Recruitment 2020-21. Defence Research and Development Organisation – National Materials Research Laboratory (NMRL) is hiring candidates for various posts of Apprentices for the financial year 2020-21. Vacancy Details Graduate Apprentice – 8 Posts Diploma Apprentice – 6 Posts ITI Apprentice – 12 Posts 10+2 Apprentice – 4 Posts Educational Qualification: Graduate Apprentice –