Over the last four years, César Arias has been a international speaker and consultant specialized in public debt management, climate finance, infrastructure financing, and capital markets development for the World Bank Group, the International Monetary Fund, and CAF Development Bank of Latin America and the Caribbean in Washington, D.C. During this period, César advised and provided technical assistance to governments, central banks, and financial regulators in more than 25 countries in Latin America and the Caribbean, Sub-Saharan Africa, and Emerging Europe.

Between 2018 and 2022, César served as director general of Public Credit and National Treasury of the Republic of Colombia, where he led the nation's financing strategy during the pandemic and implemented innovative projects such as the issuance of the first sovereign green and social bonds, the green taxonomy, and the public debt exchange-traded fund. Previously, he was principal economist for Latin America at Deutsche Bank and head of sovereign credit ratings for Central America and Frontier Markets in South America at Fitch Ratings in New York.

César has a master's degree in public administration from the School of International and Public Affairs at Columbia University in New York and a bachelor's degree in Government and Relations from Universidad Externado de Colombia in Bogotá.