Dr. Hernández Llosas has been a university associate and full professor, at graduate and postgraduate levels, at National Universities of Buenos Aires, Rosario, Cordoba and del Centro in Argentina, and at Politecnica del Litoral in Ecuador. She has been an ICOMOS expert consultant in evaluating international rock art sites for proposed UNESCO Heritage listing. She was recently a conservation guest scholar at the Getty Conservation Institute.

Her primary fieldwork has been conducted in the southern Andes and Patagonia in Argentina, and abroad in Mexico, Italy, and Australia, and has included the subjects of archaeology, rock and prehistoric art, and heritage studies with a broad social sciences and humanities approach. This approach considers the importance of long-term connections between human societies and their lands, regarding all the cultural aspects involved while stressing the importance of the association between heritage, social memory, and cultural identity.