He served in the 8th Main Directorate of the KGB of the USSR (encryption and decryption, it was also responsible for government communications), beginning his service as an engineer.

On May 31, 1999, by decree of the President of the Russian Federation Yeltsin, he was appointed General Director of FAPSI.

Since January 2001, as Director General of FAPSI, he was a member of the Operational Headquarters for managing counter-terrorism actions in the North Caucasus region, created by decree of the President of the Russian Federation.

Since November 2000 - Chairman of the Coordination Council for ensuring the security of encryption tools and their operation in government and closed communications systems of the CIS member states.

[1] On March 11, 2003, President of the Russian Federation Putin signed a number of decrees aimed at reforming government bodies in Russia.

On January 26, 2010, Prime Minister Vladimir Putin signed a governmental decree releasing Matyukhin from his post “due to reaching the age limit” for holding it.