[2] Stanislav began his professional career at the Solomiya Krushelnytska Lviv State Academic Theatre of Opera and Ballet.
During his tenure at the National Opera of Ukraine, he performed numerous leading roles in both classical and contemporary ballets.
[5] In 2021, he was awarded the Grand Prix at the 1st International Ballet Festival UA held at the National Opera of Ukraine.
[12] In March 2023, he worked with American choreographer Alonzo King, performing the lead role in his ballet "Following the Subtle Current Upstream.
"[13] Olshanskyi toured extensively, performing in countries such as the United States, Germany, the United Kingdom, Switzerland, France, Italy, Luxembourg, Belgium, the Netherlands, Japan, Kazakhstan, Azerbaijan, the UAE, South Korea, North Macedonia, Greece, Poland, Turkey, Brazil, Argentina, Peru, Chile, and Mexico.
Stanislav worked with Alexei Ratmansky in the Netherlands, London, and the United States on productions of the ballets Giselle, DSCH, and Swan Lake.