He served as ad hoc Attorney of Peru for one of the highest profile criminal cases in Peruvian history, involving the investigation of former President Fujimori and his chief of intelligence, Vladimiro Montesinos.

He was retained as external consultant to Dutch organizations Hivos and Novib for Human rights assessment missions in Costa Rica and Sri Lanka (1990–1991).

In 2004 he was elected as Peruvian Eisenhower Fellow for the Multi-National Program (United States, March–May) and later that year, joined the Institutional Integrity Office of the World Bank (2004-2006).

Representative of Transparency International at the expert meeting of the MESICIC (follow Mechanism of the Inter-American Convention Against Corruption, Washington DC, March 22, 2010).

[8] José Ugaz is speaker in different events and countries on Corruption and Money Laundering: APEC, OECD, United States, Argentina, Ecuador, Colombia, Paraguay, Bolivia, Nicaragua, Honduras, Panama, United Kingdom, Czech Republic, Mexico, Switzerland, Spain, Brazil, Chile, Guatemala, Japan, South Korea, Greece and Thailand.