Career
Sintsov began skating in 2000. Partnership with Gubanova
Sintsov teamed up with Anastasia A. Gubanova in 2011. The pair placed fourth at the 2015 World Junior Championships in Tallinn, Estonia.
Gubanova/Sintsov started the 2015-2016 JGP season by taking gold in Colorado Springs, Colorado, finishing 3.54 points ahead of silver medalists Joy Weinberg / Maximiliano Fernandez.
These results qualified them for the 2015-2016 JGP Final in Barcelona, where they finished fourth. Gubanova/Sintsov finished 8th at the Russian Championships and fourth at the junior level
Named as alternates for the 2016 World Junior Championships, they were called up when an injury led Atakhanova/Spiridonov to withdraw. They placed 11th in both segments and 11th overall at the event in Debrecen, Hungary.
(with Gubanova).