He served as president of the Social Christian Unity Party from July 2014 to September 2018.

[3] Muñoz served as an advisor to the Costa Rican Minister of Foreign Affairs and Human Rights in 1999.

He served as a substitute council member at the Municipality of Liberia, representing the Social Christian Unity Party (PUSC), from May 2006 to April 2010.

[3] Muñoz is married to Carolina Carazo and they have three children: Victoria, Antonio, and Ana.

He is the author of the book Dejemos Huella, Costa Rica Puede Más, published in 2015.