Massachusetts-based biofuel company Qteros, whose Q Microbe technology turns biomass into cellulosic ethanol, announced that Kevin Gray has joined the company as chief technology officer. Gray most recently served as senior director of biofuels research and development for biotech company Verenium Corp. He brings more than two decades of experience in managing and conducting high-level research at Diversa Corp., Energy BioSystems Corp. and Verenium. He earned his Ph.D. from Texas Tech University and served as a postdoctoral fellow at the University of Pennsylvania and The Max Planck Institute for Biochemistry in Germany.