He graduated from Hofstra University in 1985 and received his JD from CUNY Law/City University of New York, School of Law in 1994. In 1989, he enlisted in the Marine Reserves and attained the rank of Sergeant. Mr. Marcos served as Vice President of the Long Island Hispanic Bar Association and has been Legal Counsel to Adelante of Suffolk County, The Long Island Portuguese Club and serves as Executive Vice President of Pronto of Long Island. He was honored at the 2009 Somos El Futuro conference, as well as at the 2010 Puerto Rican Day Parade in Bay Shore/Brentwood, New York. In October of 2011, during Hispanic Heritage Month, he was also honored for his work by the Suffolk County Executive.