For the past 16 years, Arnaldo has worked in consulting, for the government and nonprofit sector, focused in analytics, program evaluation, finance, and information technology. He has worked for the US Census, the Mayor’s Office of Workforce Development and the Office of Management and Budget at the City of Chicago. Arnaldo was Executive Director of the Segundo Ruiz Belvis Cultural Center, a community-based nonprofit in Chicago, where he was responsible for a major expansion, revitalizing the brand, reengineering its program portfolio and significantly increasing funding for the organization.

In Puerto Rico, Arnaldo served as executive director of the Senate Committee on government performance and economic development at the Puerto Rico Senate. He was also senior advisor to the Senate President on public finance, where he developed and implemented a performance management process for the commonwealth’s budget.

In 2012, Arnaldo co-founded the Center for Integrity and Public Policy (CIPP), responsible for the development of Puerto Rico’s first open data platform, ABRE Puerto Rico. At the CIPP, Arnaldo has been responsible for the development of the Fiscal Health Index and the School Performance Index, as well as other analytical products.

More recently, Arnaldo was the Research Director of Foundation for Puerto Rico, a local non profit, where he established a new research unit to support the organization’s advocacy programs. At Foundation, Arnaldo also led the development of the first National System of Tourism Statistics in Puerto Rico. He was also responsible for the design and evaluation of the organization’s post disaster programs.

Arnaldo is currently the chairman of the board of the Puerto Rico Institute of Statistics, the government entity in charge of establishing the statistical policy for the commonwealth. Arnaldo has a Masters in Public Policy, with a concentration in Program Evaluation from the Harris School of Public Policy Studies at the University of Chicago.