A graduate of the École Nationale des Ponts et Chaussées engineering school in Paris, Aziz Mebarek held various positions in industry before becoming Advisor to the Chairman & Managing Director of the steel conglomerate Tunisacier-Ilva Maghreb from 1987 to 1991, and Managing Director from 1991 to 1994. He was then involved in setting up the investment firm Tuninvest-AfricInvest Group. He is also co-founder of the African Venture Capital Association and the Association Tunisienne des Grandes Écoles.
Having begun its activities in Tunisia in 1994 and later extended its operations to other countries in central North Africa, Tuninvest–AfricInvest Group has been active in Sub-Saharan Africa since 2004. Targeting SMEs, the group manages assets of more than USD 500 million through ten investment funds. It has a team of 37 investment specialists and has invested in 90 companies in some ten countries from its six offices in Abidjan, Algiers, Casablanca, Lagos, Nairobi and Tunis.