Born in Zheleznogorsk, Kursk region, Russia, he studied engineering with qualifications in spacecraft and upper stages from the Moscow Aviation Institute. Gorbunov graduated from the military department with a specialty in operation and repair of aircraft, helicopters, and aircraft engines. Before being selected as a cosmonaut in 2018, he worked as an engineer for Rocket Space Corporation Energia and supported cargo spacecraft launches from the Baikonur cosmodrome.