Early years Sinitsyna began learning to skate in 2008. Sinitsyna then represented Russia in
Sakhalin at the first Children of Asia Games, winning the bronze medal behind
You Young and
Alena Kanysheva. In March 2019, Sinitsyna represented Russia, alongside countrymates Alexandra Trusova and Anna Shcherbakova, at the
World Junior Championships in
Zagreb,
Croatia after Alena Kostornaia withdrew due to a medical condition. Ranked fourth in the short and sixth in the free skate, Sinitsyna finished fourth overall.
2019–2020 season: Youth Olympics For the 2019–20 season, Sinitsyna was assigned to
2019 JGP USA in Lake Placid, New York. However, she withdrew due to visa issues. She was reassigned to
2019 JGP Russia in Chelyabinsk, Russia, where she won the silver medal with a score of 204.25 behind
Kamila Valieva. At the
2019 JGP Italy, Sinitsyna placed first in both the short program and the free skate with new personal best scores and won her first Junior Grand Prix gold medal. These results qualified her to the
2019–20 Junior Grand Prix Final, where she placed fourth. At the
2020 Russian Championships, an error in the short program led to her placing fifteenth, but she climbed to fifth place overall with a fourth-place finish in the free skate. exhibition gala
2022–2023 season Kseniia finished 7th at the
2023 Russian Championships. 2023–2024 season: Bronze national medal Sinitsyna opened her season by placing 4th at
2023 Russian Cup Stage 6 the winning gold at the Stage 5, thus qualifying her for the
Russian Cup Final where she won the bronze medal. At the
2024 Russian Figure Skating Championships Kseniia won the bronze medal behind
Sofia Muravieva and
Adeliia Petrosian (results after
Kamila Valieva's disqualification).
2024–2025 season Kseniia placed 6th at Stage 4 and 3rd at Stage 1 of the
2024 Russian Cup, qualifying her for the
Russian Cup Final. At the final, she finished in 7th place. She finished 10th at the
2025 Russian Figure Skating Championships. == Programs ==