Sergei Maximov was born in 1961 in Omsk.
He graduated from the Omsk Higher Police School of the USSR Ministry of Internal Affairs, then completed a postgraduate course at the same institution and a doctoral program at the Academy of the Ministry of Internal Affairs of the USSR (Russian Federation). Doctor of Law, Professor.
From 1983 to 2005, he was a law enforcement officer. He was a postgraduate student, researcher and senior lecturer at the Criminal Law Department of the Omsk Higher Police School of the USSR Ministry of Internal Affairs, doctoral student at the Academy of the USSR Ministry of Internal Affairs (Ministry of Internal Affairs of Russia), professor at the Criminal Law and Criminology Department of the Moscow Institute of the Russian Ministry of Internal Affairs, and the Criminology Department of the Moscow University of the Russian Ministry of Internal Affairs.
From 2006 to 2018 Sergei Maximov was a Leading Researcher and Head of the Sector of Criminal Law, Criminology and Justice Problems of the Institute of State and Law of the Russian Academy of Sciences.
2008–2010: Head of the Legal Support and Licensing Department of the Federal Service for Supervision of Healthcare.
2010–2015: Deputy Head of the Legal Department of the Federal Antimonopoly Service of Russia.
2015–2016: Director of the Department for Competition and Public Procurement Policy of the Eurasian Economic Commission.
2016–2024: Assistant and Adviser to the Head of the Federal Antimonopoly Service.
Since 2015, he has been Deputy Chairman of the Scientific Council of the Russian Academy of Sciences on the problems of protection and development of competition; since 2016, Editor-in-Chief of the Russian Competition Law and Economy research and practice journal; since 2023, Deputy Chairman of the Intellectual Property Commission of the Association of Lawyers of Russia.
He is the author of more than 400 scientific and methodological works on competition, administrative and criminal law.
On July 22, 2024, Sergei Maximov was appointed Director of the EEC Department for Antitrust Regulation.