Mindua served first as a Legal Officer and Chief of the Judicial Proceedings Support Unit at the
International Criminal Tribunal for Rwanda in
Arusha from 1996 to 2001. He was also ambassador of the Democratic Republic of the Congo to
Switzerland in
Bern and Permanent Representative to the
United Nations Office at Geneva from 2001 to 2006. During his tenure in Geneva, Mindua held a number of multilateral posts, including Vice-Chairman of the Executive Committee of the Programme of the
United Nations High Commissioner for Refugees, Chairman of the
Group of 77 (G77) and China, and Coordinator of the Group of 21 at the
United Nations Conference on Disarmament. Also in 2018, he presided over hearings of
Alfred Yekatom, a former militia leader accused of alleged atrocities against Muslims in the Central African Republic. In 2020, he was part of the three-member panel who judged that former Congolese vice president and militia leader
Jean-Pierre Bemba, who had been acquitted of war crimes by the court in 2018, was not entitled to any damages or compensation for his 10-year stint in the
United Nations Detention Unit (UNDU). ==Other activities==