As a junior she became four times junior national champion and participated at the 2001, 2002, 2003 and 2004 World Junior Speed Skating Championships. At elite level Domańska-Ksyt represented her nation at the 2007 World Single Distance Speed Skating Championships in the team pursuit event (7th); at the 2008 World Single Distance Speed Skating Championships in the team pursuit event (6th); and at the 2011 European Speed Skating Championships, finishing 16th overall. She also competed at other international competitions, including at ISU Speed Skating World Cups.