Justin (Byung Uk) Lee completed his BA and master's in computer science at KAIST. He developed Korean Windows CE 1.0 and 2.0 at Microsoft while working for LG Electronics. Later, he ran his own business for more than 7 years, which proposed custom-tailored financial portfolios derived from data analysis. He then worked for several life and non-life insurers, including Samsung Life as a CMO and CSMO conducting CRM-based marketing. Currently, he intensively researches machine learning based big data finance analysis and financial applications using blockchain.