Rubik began her modeling career full-time soon after graduating from high school. She has been featured on the covers of various magazines, including French, Korean, Latin American, Japanese, Spanish, Australian, and German Vogue, Korean and French Numéro, Nylon and Elle. She has modeled for such designers/brands as Victoria’s Secret, Shiatzy Chen, Givenchy, Chloé, Christian Dior, Hermès, Valentino, Gucci, H&M, GAP, Lanvin, Balmain, Belstaff, Armani, Lacoste, DKNY, Barneys New York, Jimmy Choo, Estee Lauder, Roberto Cavalli, and Chanel. She has also done haute couture for Valentino, Chanel, Christian Lacroix and Elie Saab and Polish jeweler Apart.
Rubik was one of the faces to land in one of the fourteen covers of V magazine September 2008 issue. Each cover boasts a head shot of a famous model, either from the new crop of leading models (Agyness Deyn, Lara Stone, Natasha Poly, Daria Werbowy, etc.) or the supermodel era (Christy Turlington, Naomi Campbell, Eva Herzigova), it was photographed by duo Inez van Lamsweerde and Vinoodh Matadin.
She appeared in the 2009, 2010, and 2011 Victoria’s Secret Fashion Shows.
Vogue Paris declared her one of the top 30 models of the 2000s. As of May 2010, she is ranked 3rd, behind Natasha Poly and Lara Stone, on the Top 50 Models Women list and 18th on the Top 25 Money Girls list, which ranks the highest earning high fashion models in the industry, by models.com. As of September 2012, she is ranked as an icon.
Rubik is featured in the 2009 fitness video game Yoga Wii for the Wii home console. She was also an inspiration for a character in the manga “The One” as the main character Cane Lele.
Since 2010, she has appeared on Top Model. Zostań modelką, the Polish edition of America’s Next Top Model.