I got my bachelor\'s degree at the Universidad de Costa Rica in 2014, and my Master\'s (2016) and PhD (2019) in the Ruprecht-Karls Universität Heidelberg, in Heidelberg, Germany. Afterwards, I did two postdocs in the Wolfgang von Goethe Universität in Frankfurt, Germany, and the other in the University of Bielefeld, in Bielefeld, Germany. I am a theoretical physicist working on matter in extreme conditions. My main interest is how collectivity is built from simpler degrees of freedom. For this, I build phenomenological models to explain how when heavy-ions, like lead and gold, collide at the speed of light in the Large Hadron Collider, what we see is a system which looks like a thermalized perfect fluid. I work mostly understanding the first instants of these processes.