Igor was born on 25 March 1969 in the town of Korkino, Chelyabinskaya oblast'. In 1991, he graduated from Leningrad Higher Military Engineering School of Signals with a degree in radio communications. He served in the army in the Far Eastern Military district as a radio system engineer.
In 1996, he graduated from the engineering school of S. M. Budyonny Military Academy of the Signal Corps majoring in military radio design and production management.
From 1986 up to 2019, Pestovsky served in the Russian Armed Forces. He had risen through the ranks, starting as a chief engineer assistant and ending up as chief of a military representative office.
He was appointed RIPR JSC general manager in March 2020.
Retired Colonel, PhD in Technical Sciences, Honourable Radio Operator.