Leonid graduated from the Institute of Radio Engineering and Electronics named after A.A. Raspletin, with a degree in Production of Electronic Computing Equipment". He is also a graduate of Moscow State Institute of Electronics and Mathematics, with a degree in Automated Information Processing and Control Systems.
From 2007 to 2016, he was an engineer in the system analysis department, then a leading specialist, and then head of the traffic management department of the Center for Transport Infrastructure Research (Moscow).
Since 2016, he has gone from being head of the group, then head of the Department of Scientific Research of Transport Infrastructure and Modeling at the Research and Design Institute of Urban Planning of the City of Moscow.