Prof. Dr. Rosa María Martínez-Espinosa holds a Ph.D. in Biology (2003) from the University of Alicante (Spain), where she works as a Full Professor in Biochemistry and Molecular Biology. She obtained the Extraordinary Doctorate Award and continued her training as a researcher through postdoctoral stays at the University of East Anglia, United Kingdom (2004–2008). Her interests lie in the characterization of the molecular biology and biochemistry of extremophilic microorganisms (mainly haloarchaea): studies related to electron transfer between proteins; the purification and characterization of the enzymes using spectroscopic, molecular biology, and biochemistry techniques; and the production and isolation of biomolecules with potential applications like bioplastics (PHAs), enzymes, and pigments(mainly C50 carotenoids). More recently, she has been focused on the production of nanoparticles by halophilic archaea and the desing and development of circular-based processes to produce biomolecules of interest valorising residues and using haloarchaea as cell factories.