Moiseeva made her Biathlon World Cup debut in a sprint race in Oslo Holmenkollen during the 2002-03 Biathlon World Cup season.

[1] She was in and out of the A-Team for the next few years until she became a permanent member of the team during the 2006-07 Biathlon World Cup season.

[2] However, this mostly had to do with several established names on the Russian team having to sit out due to injuries, pregnancies or doping bans.

[6][7] In March 2008, Moiseeva was suspected of doping at the Biathlon World Championships 2008 in Östersund, Sweden.

However, she got acquitted by the IBU as she only took her substance in liquid form and that was not considered a doping offense at that point in time.