Tioumentsev was born on March 14, 2002, in El Paso, Texas, to parents Andrei, an electrical engineer, and Anna, a figure skating coach.

Tioumentsev is a graduate of Palmer Ridge High School and studied mechanical engineering at Irvine Valley College.

Selected to represent the United States at the 2023 World Junior Championships, Baram/Tioumentsev won the short program, scoring a personal best in the process.

The morning of the free skate, Baram/Tioumentsev's coach, Todd Sand, suffered a heart attack and had to be hospitalized in the Intensive Care Unit.

"[3][4] In August 2023, Baram/Tioumentsev announced that they ended their partnership due to Tioumentsev wishing to focus on his studies at Arizona State University as well as his job at SpaceX.