From June 1987 he was part of the computer engineering division, and from September 1990, head of the electronic warfare division. In February 1992 he became senior assistant commander for combat aboard the
K-117 Bryansk. From July to October 1994 he was senior assistant to the commander of the
Project 667BDRM Delfin-class ballistic missile submarine K-18 Karelia. Moiseyev with
Russian president Dmitry Medvedev on 21 February 2011 for the award of the title of
Hero of the Russian Federation He entered the
N. G. Kuznetsov Naval Academy in 2001, graduating with honours in 2003, and then served until 2007 as Chief of Staff of the of the Northern Fleet, followed by commander of the division until 2009. In 2008 he was senior officer aboard the during her transfer from the Northern Fleet to the
Pacific Fleet, spending long periods submerged beneath the Arctic ice. For this feat he was awarded a second Order of Courage. 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. On 14 February 2011 he was awarded the title of
Hero of the Russian Federation. In the awards ceremony on 21 February,
President of the Russian Federation Dmitry Medvedev announced "The Gold Star of the Hero of Russia is awarded to Alexander Alekseevich Moiseyev, commander of the strategic division of submarines of the Northern Fleet. 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. As Supreme Commander, I watched these exercises. And, indeed, everything was done to a very high standard." ==Flag rank and the Black Sea==