Rose Tumba Kaja is an attorney at the Bar of the Court of Appeal of Haut-Katanga in the Democratic Republic of Congo, where she made history as the first woman ever elected Bâtonnière in the DRC.  She served two consecutive terms as Bâtonnière from 2015 to 2022.

She is also the first woman to hold a doctorate in law from the Faculty of Law at the University of Lubumbashi, a distinction she earned in September 2025, and she serves as an Associate Professor at that institution.  Her international reach is significant: she is a founding member of the International Penal Bar in Montreal, Canada, and is registered on the list of Counsel at the International Criminal Court in The Hague.

She serves as Deputy Secretary General of the Union of Lawyers of Central Africa (UNAAC).  She is a member of the Board of Directors of the NGO Femmes d’Exception, where she also serves as Vice-President.  She is an arbitrator at the arbitration center of the FEC.