In 2019 she was a member of the inaugural International Swimming League representing the Cali Condors, who finished third place in the final match in Las Vegas, Nevada in December. Hannis finished 2nd in the 50 meter breaststroke and 3rd in the 100 meter breaststroke at the final. In the 2020 Season She stayed with the Cali Condors and helped them win their 1st ISL title. Hannis finished 4th in the 200 Breaststroke, 4th in the 50 Breaststroke, 3rd in the 100 Breaststroke, and finished 2nd in the Breaststroke skins.