In the 2002–2003 season, Rubleva / Shefer won the silver medal at the 2002–2003 ISU Junior Grand Prix event in China and placed 4th at the event in Germany to qualify for the Junior Grand Prix Final, where they placed 8th. In the 2003–2004 season, they won silver medals at both their events on the 2003–2004 ISU Junior Grand Prix circuit to qualify for the Final. They placed 7th at the Junior Grand Prix Final. They placed 5th on the senior level at the 2004 Russian Championships and then won the bronze medal on the junior level. They were sent to the 2004 Junior Worlds where they placed 6th.