Fiamingo joined the national senior team in the 2010–11 season. At the 2011 European Championships in Sheffield she reached the quarter-finals, where she was defeated by teammate Nathalie Moellhausen. The next season she climbed her first World Cup podium with a bronze medal in Doha, followed by a gold medal in Rio de Janeiro. Qualified to the 2012 Summer Olympics with the team, she was defeated 14–15 in the quarter-finals of the individual event by China's Sun Yujie. In the team event, Italy were defeated in the first round by the United States, then lost to Romania in the ranking matches and finished seventh.