Malaussena made her senior international debut at the 2009 Mediterranean Games. She helped the team win a gold medal by contributing scores on vault, bars, and beam. Malaussena finished second in the all-around at the 2010 National Championships. At the 2010 European Championships, she competed on vault and bars to help the team finish fourth. She then competed at the 2010 World Championships. The French team finished eleventh in the qualification, and Malaussena qualified for the all-around final in 22nd with a 55.098. She finished 23rd in the final with a 54.265 after a fall on floor.