Mimy Matimbe was born at Mamelodi, north east of Pretoria in 1977 and matriculated from Thabo Tsako High School in 1995. She obtained a Bachelor's degree in Commerce from Vista University, Mamelodi Campus in 1999.[1]
In 2014, then Maj Matimbe served as 2IC Artillery Mobilization Regiment until 31 March 2017 where she was replaced by Maj Danny Lebatla. She was promoted to the rank of lieutenant colonel in April 2017 and was appointed as the Officer Commanding, 4 Artillery Regiment on 7 April 2017. She is the first woman ever to command an artillery regular force unit in South African Military History. She was awarded the crossed-barrels by the South African Artillery Corps Council on 8 November 2019 by Brig Gen Khaya Makina during end of the year investiture celebrated at the Dan Tloome Banquet Hall, Potchefstroom. She handed over command of her regiment in late 2020 and has since completed the SANDF Joint Senior Command and Staff Programme during 2021 and served briefly as staff officer at Headquarters of Artillery and presently at the Joint Operational Headquarters.