[1] On April 28, 1995 he was elected deputy chairman of the board of directors of the Baltic Sea Steamship Company.

[citation needed] In 2005 he was a first deputy director general of the Gazprom Media holding.

Since November 7, 2005 he has been President Vladimir Putin's envoy to the Constitutional Court of the Russian Federation.

[3] In July 2020 Krotov was appointed judge of the Supreme Court by the Federation Council.

He wrote comments on the Civil and Labor Codes of the Russian Federation.