Jack Shtembuliak was born in Odessa, Ukraine in 1999. His mother introduced him to chess when he was 6 years old. He won his first Ukrainian Championship in 2007. Afterwards, he placed second in the European Chess Championships 3 times in the following categories: under 8, 10, and 12. Throughout his chess career, he has won a number of different tournaments. In 2016, he earned his last norm and became an International Master. Currently, he has 1 Grand Master norm. Now, he is pursuing a Bachelor's Degree in finance at Texas Tech University.