Marcos obtained a BSc in Biotechnology from the Universitat Autonòmade Barcelona. He moved to Scotland in 2014 to work in Ingenza Ltd, to engineer new metabolic pathways in bacteria. In 2016, Marcos joined the University of Edinburgh to pursue a PhD in the lab of Professor Chris French, funded by EastBio andt aiming at engineering microbes to break down cellulose. After completing his PhD, he worked in the lab of Prof. Louise Horsfall to develop Synbio tools for a non-model bacterium. Marcos joined the Wallace lab in November 2021 to work in an industrial collaboration seeking the sustainable generation of an industrial feedstock chemical.