Donasiyano was born in a refugee camp in Tanzania and now represents his homeland of Burundi at the senior national level. The 24-year-old moved to the United States in 2007, settling with his family in Roanoke, Virginia. Donasiyano attended the University of Virginia from 2017-2020, making 65 appearances for the Cavaliers. Following graduation and a standout college career, Donasiyano was selected 20th overall in the 2021 MLS SuperDraft by Nashville SC. Donasiyano madde one appearance for the MLS side, being loaned to the USL Championship in both 2021 and 2022 to OKC Energy and Phoenix Rising, respectively. In November of 2022, Donasiyano made his first appearance for the Burundi National team against Ivory Coast.