Born on December 14, 1988, in San Juan, Puerto Rico, Marrero obtained a B.B.A.

After earning a Juris Doctor from the Interamerican University of Puerto Rico and passing the bar, he went on to obtain an L.L.M.

[1] Marrero's public service career includes having served as Secretary of the Puerto Rico Department of Consumer Affairs.

Marrero is also the executive director of the Puerto Rico Fiscal Agency and Financial Advisory Authority (AAFAF).

In July 2021, he was appointed by Pedro Pierluisi as the Secretary of State of Puerto Rico.