Alexey graduated from the Belarusian State Medical University in 2018 and defended his master's thesis in medical sciences the following year. He later continued his studies in graduate school.
Since the end of 2022, Sosnovsky has worked as an assistant in the Department of Radiation Medicine and Ecology at the Belarusian State Medical University. He has authored 20 publications and written a dissertation on radon in the air as a radiation risk factor for health.
At the same time, the man worked as a tutor, preparing schoolchildren for the Centralized Testing and Olympiads in chemistry and biology.
