After primary studies at the Mero school in Kamituga, he completed his secondary studies at the Petit Séminaire de Mungombe, where he obtained his diploma in Greek-Latin humanities in 1953. The same year, he passed his Jury - in Léopoldville - with honour; which opens the doors to Lovanium University. He was one of the first 5 Doctors of Law in the history of the Democratic Republic of the Congo from 1960 to 1963 and Betty Hubert and Gakwaya Faustin. He obtained in 1963, his doctorate in Law.
His professional career began in 1964 when he was appointed Legal Advisor and Director of the Studies and Documentation Department at the House of Representatives of the Congolese Parliament. The same year, he was part of the Technical Secretariat responsible for drawing up the "Luluabourg Constitution". He will then be a lawyer before the Court of Appeal of Léopoldville, Lawyer before the Court of First Instance of Bukavu, Lawyer before the Court of Appeal of Kisangani, Lawyer before the Court of Appeal from Bukavu and several times Dean of the Council of the Order. Until 1994, he was a lawyer holding a permit from the Government of Rwanda to plead before the courts of that country. His political engagement dates from 1964. He was then one of the leaders of the "African Democratic Party", which led him to be appointed Minister of Justice and Keeper of the Seals and Social Affairs of the government of Public Safety led by Moïse Tshombé from 1964-1965. In his capacity as Minister of Justice, he was co-signer, for his promulgation, of the Constitution of Luluabourg. In 1965, he joined a new political party: the Alliance of Congolese Christian Socialists and managed to be elected national deputy for the electoral district of Kivu. He then joined the Popular Movement of the Revolution until he was hoisted there as a member of the Central Committee and the Political Bureau. During the democratization of 1990, he left the MPR to join the UFERI, then the UDPS, before leaving politics definitively and devote himself to reading, his passion all the time. Léon Mamboleo is one of the eminent lawyers who have always defended the cause of DR Congo before international legal bodies. In 1999, he was the Principal Legal Correspondent for DR Congo at the Agence intergouvernementale de la Francophonie. Since 2000, he had retired and was living between Bukavu, Kinshasa, Europe and the United States. Last March, he managed to be elected Senator of the Province of South Kivu and currently chairs, in his capacity as dean of the new elected Senators, he was elected interim president to replace Léon Kengo at the Senate of the Democratic Republic of Congo.
Private life
Léon Mamboleo is married and the father of several children. One of his children, Milulu Mamboleo was a national minister in DRC in Kabila government.
