Cristian obtained his Veterinary medicine degree at the University of Cordoba and the University of Milan. During his degree he did a research internship at King's college London, where he investigated the role of GSK-3 in craniofacial development. After the internship, Cristian studied a Master's degree in Biochemistry, Molecular Biology and Biomedicine at the University Complutense of Madrid. He developed his Master's thesis at the CNIO, his thesis was focused on  the function of KRAS at pre-neoplastic stages of Pancreatic Cancer. Then, Cristian finished his Ph.D. at Wuerzburg University. Under the supervision of Markus Diefenbacher, he revealed that USP28 deubiquitinates and stabilizes ΔNP63 to promote Squamous tumour formation. In June 2020, Cristian joined the group of Ivan Dikic as a Postdoctoral researcher to study the role of ubiquitination in cancer using mouse model.