Natasa grew up in Serbia and competed for FR Yugoslavia at the 2000 Summer Olympics before moving to Hungary.

She is a daughter of Milan Janić (1957-2003), a Serbian canoer who won a silver medal for Yugoslavia in the 1984 Olympic Games in Los Angeles.

She has also won 26 medals at the ICF Canoe Sprint World Championships with 20 golds (K-1 200 m: 2007, 2009, 2010; K-2 200 m: 2005, 2006, 2009, 2010; K-2 500 m: 2005, 2006; K-2 1000 m: 2005, 2006; K-4 200 m: 2002, 2003, 2006; K-4 500 m: 2006, 2009, 2010; K-4 1000 m: 2003, 2006; K-1 200 m relay: 2013) and six silvers (K-1 500 m: 2010, K-1 4 × 200 m: 2009, 2010; K-2 200 m: 2015; K-2 500 m: 2013; K-4 200 m: 2009).

On 4 October 2012 it was revealed that she made a decision to return and compete under the flag of her native country, Serbia.

[3] On 9 March 2013 she informed the Hungarian Canoe Federation in a letter about changing her mind and her wish to compete for Hungary during her professional career.