He had primary and secondary studies at Colegio La Piedad in Isla Verde, Puerto Rico until he graduated.

Later he went to the University of Puerto Rico where he earned a bachelor's degree in commerce with a concentration in Human Resources.

In 1984 he began a political career as an electoral worker and president of the New Progressive Party municipal youth committee in Carolina, Puerto Rico.

From 2004 to 2008 Jiménez was the Speaker pro tempore of the House of Representatives of Puerto Rico.

The standing mayor, José Aponte Dalmau from the Popular Democratic Party, was able to keep his position.