For 10 years, Roman Anatolyevich headed the Department of Theory of Law and State at St. Petersburg University of the Ministry of Internal Affairs of Russia. He served in the Federal Penitentiary Service of Russia as head of the Samara Law Institute of the Federal Penitentiary Service.

Professor Romashov is a member of the dissertation council at the Samara State University, as well as at the Kazan (Volga Region) Federal University. More than 32 candidates and 8 doctors of legal sciences have been trained under the direct scientific supervision of Roman Anatolyevich.

Roman Romashov is the author and co-author of over 450 scientific papers and teaching aids, including 12 monographs, 38 teaching and teaching aids, 12 textbooks (including those published in co-authorship), scientific and methodological developments and articles.

Currently, Roman Anatolyevich holds the position of professor at the Department of Theory of Law and Law Enforcement at the St. Petersburg Humanitarian University of Trade Unions.