[4][5][6][7] His father, Semyon (Simon) Ivanovych Zelenskyy, served in the Red Army's 57th Guards Motor Rifle Division during World War II.
[9][10] Oleksandr Zelenskyy earned his bachelor's degree in electrical engineering from the Kryvyi Rih State University in 1972.
In 1983, he defended his dissertation at the Moscow State Mining University, titled "Automated calculation of iron ore reserves in the ICS quarry."
Zelenskyy has been the head of the Kryvyi Rih State University's Department of Cybernetics and Computing Hardware ever since 1995.
[11] Zelenskyy used his prior scientific research to create an automated mining management system for Erdenet, a joint Mongolian-Russian company which develops one of the world's largest copper-molybdenum deposits.