As a social advocate, Ruiz began working on social issues disproportionately impacting minority groups during his college years. At Harvard he was elected to the student council four years in a row. He worked on the issue of increasing minority faculty in tenured positions on a committee with the Dean of Harvard College.

Within his advocacy marketing firm, Ruiz has worked on a range of issues, from financial literacy to the elimination of health disparities.

Since 2008 he became involved as an advocate for comprehensive immigration reform, universal healthcare, and regulations to curb the impact of sugary drinks and fast food on obesity, writing numerous op-eds and columns as a Contributor to and as a writer for, a website he founded featuring multicultural perspectives on mainstream issues. His columns have appeared in major newspapers across the country, including the Houston Chronicle and Philadelphia Inquirer.

Ruiz developed a financial literacy curriculum for Latino immigrants. Sponsored by Western Union, Ruiz worked with non-profit organizations such as the CHIRLA (Coalition for Humane Immigrant Rights of Los Angeles) to deliver the free financial literacy courses to the public.

In the area of nutrition, in 2013 Ruiz became a member of the Board of Directors of CSPI (Center for Science in the Public Interest), the DC-based consumer and policy advocacy organization that is widely considered the national leader on issues of nutrition.