Was born in Leningrad, In 1996 he graduated Saint-Petersburg Choral school named after M.I. Glinka, in 2001 – Saint-Petersburg state conservatory named after N.A. Rimsky-Korsakov (2001 - Conductor-choral Faculty, class by prof. T. Hitrova, 2014 – Faculty of composing and conducting, specialty «Conductor of the opera and symphonic orchestra») and studied electively in class of organ (pedagogue – prof. M. Chausova).

From 2001 till 2009 he teaches on the department of vocal and musical education in Saint-Petersburg theatre arts academy. From 2002 till 207 he works as conductor and chorus master in Saint Petersburg Lensovet Drama Theatre and in theatre «Na Liteynom» (till 2011).

In 2003 he was invited as principal chorus master in Theatre of musical comedy. With his participation were realized following productions: «Hello, Dolly!» J. German, «Viennese Meetings» based on the music by J. Strauss, «Not like the others» A. Petrov and A. Kalvarsky, «Bluebeard» and «Parisian life» J. Offenbach, «The Merry Widow» F. Lehar, «Bayader», «Silvia», The «Duchess from Chicago», «Countess Maritza» and «The Violet of Montmartre» I. Kalman, «Oh, dear friend!» V. Lebedev, «Chicago» J. Kander, «The Bird Seller» C. Zeller, «Madame Pompadour» L. Fall, «The Bat» J.Strauss, «Gasparone» C. Millöcker, «Oliver!» L. Bart, «Grooms» I. Dunaevsky. In 2007 he realized musical direction of performance for children «Teremok» A. Kyligin, in which artists of chorus were performing leading parts.

 The musical director and conductor of the musical «Dance of Vampires" by J. Steinman, children's musical performance Disney «Aladdin» by A. Menken, concert «Hits of Broadway», operetta «Land of smiles» by F. Lehar, musicals «Jekyll & Hyde» and «The Count of Monte Cristo» by F. Wildhorn, «Hits of Broadway - 2. On the stage and on the screen».

In 2009 by Order of President of Russian Federation Alexey Nefedov was rewarded with Order Medal «For achievments to Native land» of II degree.

As a conductor of the musical «Dance of Vampires» was awarded the Prize of the Government of St. Petersburg in the field of literature, art and architecture for the year 2011 «For achievements in the field of music and performing arts».

In April 2017, on the stage of the Budapest Operetta and Musical Theater, he conducted to a large concert dedicated to the 10th anniversary of cooperation with the St. Petersburg Theater of Musical Comedy.

In September 2017 he was appointed «Supervisor of Musicals» of the St. Petersburg Theater of Musical Comedy.

In 2019, by the Decree of the President of the Russian Federation, he was awarded the Medal of the Order "For Services to the Fatherland", 1st degree "For a great contribution to the development of national culture and art, many years of fruitful activity."