Olga Rossini graduated from Choral Conducting and Solo Singing departments of the Perm Music College in 1998, before enrolling at the Choral Conducting Faculty of the Moscow State Tchaikovsky Conservatory, where she studied until 2003.
She was a choirmaster at the Moscow Conservatory Opera in 2009–2016, then a choirmaster at the Taganka Theatre in 2018–2020. Since 2003, Olga has been a choir member with the Stanislavsky and Nemirovich-Danchenko Music Theatre. <
Since 2013, Olga Rossini has been a soloist with N’Caged vocal ensemble, performing works by contemporary composers. She has also been involved in numerous productions of Stanislavsky Electrotheatre, such as Boris Yukhananov's Drillalians (composers: Dmitry Kurlyandsky, Boris Filanovsky, Alexey Syumak, Sergei Nevsky, Alexey Sysoev, Viadimir Rannev), Prose opera by Vladimir Rannev (five nominations for the Golden Mask national theatre award, winner of Casta Diva award), and The Book of Seraphim opera by Alexander Belousov. In 2021, Olga Rossini was nominated for the Golden Mask Russian National Award as Best Female Opera Singer for her role of Thel Singing in The Book of Seraphim.