Denys I. Katielnikov was born in Vinnytsia, Ukraine, in 1973. He received the M.S. degree from the Software Engineering Department at Vinnytsia National Technical University, Ukraine, in 1995, and the Ph.D. degree in automated control systems and advanced information technologies from the Kyiv Institute of Automation, Ukraine, in 1999. Since 1999, he has been an Associate Professor with the Department of Software Engineering at Vinnytsia National Technical University, Ukraine, where he is currently pursuing the Dr. Sc. (Tech.) degree in information technologies. He is also a Microsoft Certified Solution Developer (MCSD) and a Cisco Certified Network Associate (CCNA).