Antonius 'Toos' Sanitioso has an educational background in Civil Engineering from the University of Parahyangan in Bandung. Toos-his nickname, started his career as a pilot when he was offered to work in Nusantara Aircraft Industry (IPTN) in the 1980s. At IPTN, he served as the Experimental / Production Test Pilot (Fixed / Rotary Wing). In addition to the experience, he also went to Sierra Academy of Aeronautics in California, Flight Safety Academy in Florida, and International Test Pilot School in Cranfield, England. Armed with that education, Toos devoted himself to become test pilots who holds two licenses at once, for Rotary Wing Helicopter and Fixed Wing aircraft in full.