Poleschuk took part in Alpine FIS races from December 2001 , of which she won nine in the following years. Appearances in the Nor-Am Cup followed from March 2002. From the 2003/04 season she specialized in the downhill and super-G disciplines . In 2005 she won a Super-G twice in the Nor-Am Cup, on February 6th and December 12th. Poleschuk made her debut in the Alpine Ski World Cup on December 1, 2006 in Lake Louise . In a total of six World Cup races, however, she was never able to classify herself in the points, a 44th place remained her best result.
At the beginning of the 2008/09 season, Poleschuk switched to ski cross and started the Freestyle World Cup for the first time on January 5, 2009 in St. Johann in Tirol . She won World Cup points for the first time five days later when she was fifth in Les Contamines . This was her best result in her first season. Poleschuk took part in the 2010 Winter Olympics and achieved a podium finish in a World Cup race for the first time on March 12, 2010 with third place in Grindelwald . In the 2010/11 season she was characterized by consistency and always placed in ranks 8 to 14.