Dr. S. Fernández earned his BSc and MSc with honors at the University of Girona (Spain), where he began research in computational and experimental catalysis for H2 production under Prof. Julio Lloret-Fillol and Dr. Josep M. Luis. He then obtained a competitive FPU fellowship from the Spanish Ministry of Universities to pursue his PhD at the Institute of Chemical Research of Catalonia (ICIQ), focusing on photo- and electrocatalytic CO2 reduction to fuels. In 2022, he joined the group of Prof. Alex Miller at UNC-Chapel Hill (United States), where he developed an electrochemical–thermal cascade for CO2-to-methanol conversion and served as a thrust coordinator in the U.S. DOE Solar Fuels Hub (CHASE). Supported by the prestigious Ramón Areces International Fellowship, he expanded his research toward compartmentalization strategies for acidic electrolysis. Along his career, he has completed research short-stays at the University of Paris and Yale University, and has participated in synchrotron projects at Diamond Light Source (UK) and Soleil (France). In 2025, Dr. Fernández returned to the Spanish research system as a Juan de la Cierva Fellow in the group of Prof. Miquel Costas at the University of Girona (IQCC-UdG). In January 2026, he became Beatriu de Pinós researcher at the same institution where he is currently developing electrocatalytic methodologies at the interface of organometallic small-molecule activation and organic redox transformations.