Her child years the singer spent in the Ukraine, native land of her father, known for its rich voices. Then her family moved to the north, to Inta, Komi Republic. After finishing secondary school she entered the Republican School of Arts (Syktyvkar), vocal department, the class of Sergei P.Markov, Honoured Culture Worker of Russia, People’s Artist of the Komi Republic, Honoured Teacher of the Komi ASSR. His pupils were such prominent singers as Nikolay Putilin, Vladimir Vaneev and many-many others.

In 1984 Olga Sosnovskaya became a student of Petrozavodsk Branch of Leningrad Conservatory, since 1988 - a soloist of the State Opera and Ballet Theatre of the Komi Republic in Syktyvkar.

During her time in the theatre she worked with such conductors as Valery Gergiev, Alexander Polenichko, Vasily Nebol’sin, Valentin Nesterov, Leonid Mullaev, Igor Latsanich, Yury Anisichkin, Alexander Sitnikov, Vladimir Samarin, Vladimir Pon’kin, Arkady Schteinluht, Engele Negene, Feliks Korobov, Mats Liliefors.

Such singers as Anatoly Solovyanenko, Vladimir Vaneev, Nikolay Putilin, Anatoly Fokanov, Boris Statsenko, Valery Popov, Victor Pishchaev, Yassi Zaharov, Vladimir Ermakov, Alexander Baskin, Oleg Bektimirov, Viktor Chernomortsev were her partners on the stage.

On December 18, 1999 Olga Sosnovskaya celebrated her 10-year stage career with opera performance "Barbiere di Siviglia". At this performance it was solemnly declared about conferring an honorary title of the People’s Artiste of the Komi Republic on her. She became the youngest “People’s Artiste” in the republic.

In October 2001 Olga Sosnovskaya participated in the All-Russia Classical Romantic Song Soloist Contest (the city of Vladimir). She became Laureate of the contest (II Prize) and winner of the special prize of the contest jury "For the best performance of musical composition of the Soviet composer".

In April 2003 Olga Sosnovskaya became winner (I Prize) of the IV International Izabella Yuryeva Old-Russian Romantic Song Contest in Tallinn (Estonia).

Since 1993 the "Olga Sosnovskaya Junior Vocalists Contest" has been held once in two years in Inta, Komi Republic, which participants are children from 9 to 20.

As to Olga Sosnovskaya, she, as professional singer and stage master, in recent years all more often participates in various international contests and festivals as a jury member.

The V-th issue of the encyclopedia "Best people of Russia" (2005) has publication on the soloist of the State Opera and Ballet Theatre Olga A. Sosnovskaya in the section "Colours of the Russian culture".

On March 11, 2006 with the Decree of the President of the Russian Federation V.V. Putin Olga Sosnovskaya was conferred a high title "Merited Artiste of the Russian Federation".

The Benefit performance of Olga Sosnovskaya dedicated to 20-years of her creative activity took place on December 17, 2007 at the Opera and Ballet Theatre.

2012, the year of jubilee for Olga Sosnovskaya, is marked by a chain of bright and interesting creative projects.