BurundiStarting his career for New Star in 2013, he became the youngest player to play at Burundi’s highest level at the age of 16. In 2017, Nijimbere signed with IPRC-Kigali in Rwanda.[2]
In 2019, he joined Patriots BBC and was part of the team that qualified for the 2020 BAL season. He was named MVP of the 2019 Genocide Memorial Tournament and won the three-point contest in that year’s All-Star game.[2][3]
In November 2021, Nijimbere returned to New Star to play in the second round of the 2022 BAL Qualifying Tournaments.[4]
In January 2022, Nijimbere Guibert signed a two-year professional contract with Urunani BBC and at the beginning of August 2022 Urunani became the champion of the national basketball league of Burundi: VBL (Viva Basketball League).
On 14 August, Urunani BBC has drawn up a list of 12 players who will represent the club in the BAL Qualifiers with Guibert Nijimbere at the top of the list.
He joined Dynamo in October 2023 ahead of the 2024 BAL qualification tournament.[5] In April 2024, Nijimbere signed with Kepler BBC of the Rwanda Basketball League.[6]
In December 2024, Nijimbere played with Remesha in the East Africa Basketball Championship Cup (EABCC) and won the inaugural championship. He was named to the All-Star Team.