Sviatoslav Sakharov graduated from the Mikhail Glinka Minsk State College of Arts with a degree in singing (class of A.G. Galkin and D.G. Amandurdieva, 2022). Currently, he is studying at the Belarusian State Academy of Music under the People's Artist of Belarus, Professor Anastasia Moskvina.

In the 2021/2022 season, he was an apprentice of the opera company of the Bolshoi Theatre of Belarus. He joined the company in 2023.

• The Messenger / The Tale of Tsar Saltan
• Moralès / Carmen
• Ibn-Hakia / Iolanta
• Guglielmo / Le Villi. Fatum
• The Lamplighter / The Story of Kai and Gerda (The Snow Queen)
• Fiorello, the Officer / Il barbiere di Siviglia
• The Wolf / The Little Tower Chamber by Ilya Polskiy
• The Priest / Turandot
• The Tsar’s Stoker / The Tsar’s Bride