Before entering politics, Llerandi worked as an accountant, notary, and civil attorney in the field of medical malpractices.
He completed his primary studies at the Colegio San Felipe, where he was part of the basketball, volleyball, and track and field teams.
He graduated from Trina Padilla High School where he was recognized for having one of the nation's highest scores on the College Board test.
[1] Llerandi completed a bachelor's degree in Business Management at the University of Puerto Rico at Arecibo.
[3] However, a month after the election, Llerandi announced his resignation in order to lead the Puerto Rico Trade and Export Company.