He is a former Bolivian government official, published author and past president (for two years) of Bolivia's Permanent Assembly for Human Rights.

In 2005, he was Dean of the Faculty of Social and Humanistic Sciences at the University of Aquino Bolivia.

[1] In 2011, representatives from the Isiboro Sécure National Park and Indigenous Territory (TIPNIS) were marching from Trinidad to La Paz in order to protest a planned highway through their land when they were violently intercepted by police.

[6] He was also the Chair of the United Nations General Assembly Ad Hoc Committee on Sovereign Debt Restructuring Process that resulted in the adoption of UNGA resolution 69/319 that approved the nine UN principles for sovereign debt restructuring processes.

[7] In November 2019. the new interim Bolivian Government confirmed the termination of all ambassadors and representatives appointed by the removed president Evo Morales, including Llorenti.