They placed third at the event behind fellow Russian competitors Kseniia Akhanteva / Valerii Kolesov and Iuliia Artemeva / Mikhail Nazarychev.

At their second assignment, the 2019 JGP Croatia, the team placed second, again behind teammates Artemeva/Nazarychev, and with 24 qualifying points advanced a spot to the 2019–20 Junior Grand Prix Final.

The pair competed once more before the Final, earning a silver medal in the junior event at the 2019 Volvo Open Cup behind Apollinariia Panfilova / Dmitry Rylov.

The team won the free skate, but were unable to fully make up the margin set by the gold medalists in the short program.

Despite qualifying, Mukhametzianova/Mironov elected to sit out of the 2020 Russian Figure Skating Championships due to fatigue from the Junior Grand Prix Final.