Mármol has worked at Althaia, Xarxa Assistencial Universitària de Manresa since 2018. Currently, he is working towards a PhD on the Medicine and Biomedical Sciences programme at the Universitat de Vic-Universitat Central de Catalunya under the supervision of Dr Puig and Dr Pellisé. His lines of research focus on the endoscopic optical diagnosis of diminutive polyps. Mármol is also involved in the evaluation of new techniques for detection, characterization and endoscopic treatment.
Carlos likes tennis and football and he loves to talk about his country of origin, Guatemala.