Gemechu was suspended from competition in November 2023 whilst an investigation into a failed doping test took place.

She placed second at the Great Ethiopian Run, a 10 km road race in Addis Ababa, in 2018.

In 2019, she won the 10K Valencia Ibercaja, setting a new national record of 30:15 and slicing 15 seconds off Tirunesh Dibaba's previous best.

[4] She competed in the senior women's race at the World Cross Country Championships held in Aarhus, Denmark in March of that year, finishing in sixth place and helping Ethiopia take team title.

In August, she finished second at the Antrim Coast Half Marathon in Northern Ireland, setting new personal best of 1:05:01.