Jemutai began her career in the 1500 metres, racing that distance six times in 2021. For a brief period of time, Jemutai represented the Uganda People's Defence Force at the 5th and 7th 2021 Ugandan National Trials, finishing runner-up at the former event.[5][6]
At the 2021 Kenyan World U20 trials, Jemutai finished 2nd in 4:17.55, qualifying her for the 2021 World Athletics U20 Championships. [7] At the championships, she finished 2nd in her semi-final to advance behind Diribe Welteji.[8][9][10] In the finals, Jemutai finished 3rd, winning her first international medal.[11]
Jemutai did not return to racing until 2023. After debuting in the 3000 metres steeplechase in 9:45.11 to win the Kenyan Defence Forces Championships, she traveled to France and won the Meeting National de Strasbourg 1500 m in a personal best of 4:09.62.[12][13] Making her track 5000 m debut, Jemutai finished 2nd at the 2023 ISTAF Berlin meeting in 14:56, behind only Letesenbet Gidey who just missed the 5000 m world record ahead.[14] Five days later at the 2023 Memorial Van Damme, Jemutai improved her time to 14:39.05 to finish 4th.[15] Just two days after her new personal best, Jemutai ran 5:52.92 at the Hanžeković Memorial2000 metres steeplechase, a mark making her the #5 performer of all time in that event and the #3 performer outdoors.[16] She finished her season in November by placing in two Spanish World Athletics Cross Country Tour meetings.[17]
At one of the aforementioned cross country races, she provided a sample which ultimately tested positive for exogenous testosterone. She was originally given a four-year ban; however, this was reduced to three years after she admitted to the doping violation. Her period of ineligibility began on February 29, 2024 and she was disqualified from all of her results since November 12, 2023 (the date the sample was provided).[18]
