At the 2015 Cottbus World Cup, Barloggio finished 6th on the uneven bars and on the balance beam. She then competed at the 2015 European Championships and finished 24th in the all-around during the qualification round, but she did not qualify for the all-around final due to the two-per-country rule as she finished behind Giulia Steingruber and Jessica Diacci. She then competed for Switzerland at the 2015 European Games alongside Steingruber and Diacci, and they finished 6th in the team competition. At the 2015 Swiss Championships, she won the bronze medal on the uneven bars and finished 6th in the all-around. She then competed at the 2015 World Championships with Steingruber, Diacci, Nicole Hitz, Ilaria Käslin, and Laura Schulte, and they finished 16th in the qualification round, which qualified them for the 2016 Olympic Test Event.