[5] In 1983, he enrolled in the Moscow Institute of Steel and Alloys where he met his future business partners, Mikhail Fridman and German Khan.

[8] Alfa Group's portfolio includes the largest commercial bank in Russia, Alfa-Bank, (with affiliates in Ukraine, Kazakhstan, Belarus and the Netherlands/Amsterdam Trade Bank); international telecom company VimpelCom (the sixth largest mobile network operator in the world by subscribers as of April, 2012); as well as holding shares in Turkish telecommunications company Turkcell.

Until April 2012, Alfa Group owned 25 percent of Russian cell phone operator MegaFon; it sold its share for $5.2 billion.

[9] Kuzmichev owns over 18 percent of the consortium's joint assets and is a member of the board of directors of Alfa Finance Holdings.

In March 2013 Alfa Group and its joint partners AAR Consortium sold 50 percent of TNK-BP to Russian oil company Rosneft.

"[16][17][18] Two of Kuzmichev's yachts have been seized by France due to the sanctions against Russian billionaires after the invasion of Ukraine by Russia but were returned on appeal.

[19] On October 30, 2023, French police detained Kuzmichev and also conducted searches in the businessman’s Parisian mansion and his villa in Saint-Tropez.

[20][21][22][23] In November 2023, the French National Financial Prosecutor's Office (PNF) announced charges against Kuzmichev for tax fraud.