Nicolas studied Earth Sciences at the University of Bern (CH). After graduation, he subsequently started as PhD student (University of Bern) looking at how magmatic processes and core-mantle differentiation affect the Mo isotope composition. During this time, he additionally worked at the Natural History Museum Bern, focusing on classifying and collecting meteorites in the desert of Oman. He finished his PhD in 2014 and joined the Origins Lab (University of Chicago) in January 2015, where he focused on using mass-dependent isotope fractionation effects to identify and describe processes that occurred during the accretion of planetary bodies and their subsequent magmatic differentiation and evolution. In march 2017 he joined the Department of Earth Sciences at the University of Geneva as Postdoctoral researcher.