PhD in quantum physics from the University of Barcelona. Ikerbasque Research Professor at the Donostia International Physics Center (DIPC). President of the Specialized Group on Quantum Information (GEIC) and of the Spanish Royal Physical Society (RSEF). Early Career Prize from the European Physical Society, and Marie Curie Fellow. Editor of the journal QUANTUM. Partner at Entanglement Partners.Roman is in charge of the scientific direction of the company (CSO). Research and development of new quantum algorithms, as well as new Tensor Networks algorithms, both for optimization and machine learning. He also coordinates the scientific team, identifies and hires key technical staff, is the main responsible for writing scientific papers and reports. He develops networking with hardware vendors and other quantum software companies.