In 1985, Moreno Ocampo was the Deputy Prosecutor in Argentina’s landmark case against the “Military Junta”. One of the first cases after Nuremberg against top commanders for the commission of massive crimes. Between 1988 and 1992, he led the prosecution of other critical cases related to the transition to democracy in Argentina, including military rebellions, guerrilla activities, the command of the Malvinas/Falkland war, and grand corruption cases.
Between 1992 and 2002, Moreno Ocampo established and led a law firm in Buenos Aires providing services similar to a Private Inspector General for large privatized public service companies operating in Argentina and Government Agencies including the Social Security System and the National Reinsurance Institute. He also managed conflicts between the shareholders of the biggest Argentine companies and defended a few select cases including those against soccer star Diego Maradona, the famous journalist Jacobo Timerman, the Financial Times correspondent Thomas Cattan, and the former Minister of Economy Domingo Cavallo.
He has extensive international experience advising the World Bank on issues of justice and anti-corruption, and sits on the Advisory Board and Board of Directors of Transparency International and New Tactics for Human Rights.
In addition, Moreno Ocampo has a long standing commitment to the education of the younger generation. At the beginning of his career, he was the Deputy Director of the Research Center of the Law School of the Buenos Aires University and Associate Professor of Criminal Law. He also pioneered the use of TV to disseminate legal education through popular shows in Argentina. He was a Visiting Professor at Stanford University (2002) and Harvard University (2003) teaching courses on anti-corruption, and has run a number of classes and lectures throughout the years all over the world including more recently at the Basel University, Freiburg University, Yale University, Hebrew University and Al Quds University. He is currently an Associate at the Carr Center for Human Rights Policy at Harvard University where he is working on an upcoming book which will present a case study of the first nine years of the operation of the Rome Statute and its interaction with the UN Security Council using his first-hand perspective as the founding Chief Prosecutor of the ICC.