[2][3] In 2021, Sime was second in the 3000m steeplechase Ethiopian Olympic trials in behind Bikila Tadese Takele with both men running personal bests, Sime ran 8:12:11 to secure his qualification for the delayed 2020 Tokyo Olympics and was chosen in the Ethiopian squad.

[6] He ran a new personal best of 8:10.73 at the Paris Diamond League event in June 2023, in the same race that his compatriot Lamecha Girma broke the world record in the men's 3,000 metres steeplechase.

[7] He ran a new personal best in July 2023 at the Diamond League event in Monaco, running 8:10.56 to finish third behind winner Simon Koech.

[8] He competed in the 3000 metres steeplechase at the 2023 World Athletics Championships in Budapest in August 2023.

[9] In 2024, Sime set a new PB of 8:02.36 at the Meeting de Paris, holding off the fast-finishing Amos Serem to win.