[3] Moiseyev was born on 16 April 1962 in the settlement of Borskoe [ru], in the Gvardeysky District of Kaliningrad Oblast, in the Soviet Union.

From July to October 1994 he was senior assistant to the commander of the Project 667BDRM Delfin-class ballistic missile submarine K-18 Karelia.

[5] While serving in this post, he participated in a voyage to the North Pole, where the submarine surfaced and on Russia's Navy Day, raised the St. Andrew and Russian flags on the ice.

[5] On 7 July 1998 the submarine launched two German commercial micro-satellites Tubsat-N and Tubsat-N1 using the Shtil' carrier rocket, while submerged in the Barents Sea.

He enrolled in the Military Academy of the General Staff in 2009, graduating in 2011 with first class honours and the distinction of a gold medal.

During his combat patrols, under his leadership, tests of the newest weapons were successfully conducted and a whole series of rocket launches were carried out.

On 22 November 2017 he was appointed Deputy Chief of the General Staff of the Armed Forces of the Russian Federation, and on 14 May 2018 he became Acting Commander of the Black Sea Fleet, succeeding Admiral Aleksandr Vitko.

[13][14] In March 2024, according to Izvestia, he replaced Nikolai Yevmenov as acting commander in chief of the Russian Navy.