Between 1944 and 1953, Tütengil served as a high school teacher for philosophy in Antalya and Diyarbakır, and worked in village institutes as well.
In 1953, Cavit Orhan Tütengil started his academic career by entering the Faculty of Economics at Istanbul University as an assistant for sociology.
He conducted his Ph.D. research on "Political and Economic Opinions of Montesquieu", which won him the 1957 Science Award of the Turkish Language Association.
Having an excellent command of the Turkish language, he wrote his Kemalist opinions in his column in the leftist newspaper Cumhuriyet for many years.
Cavit Orhan Tütengil was murdered early in the morning on December 7, 1979, on the way to university at a city bus stop in Levent, Istanbul.