She had been working for Daum since 1995, the second largest portal in Korea for 19 years. Mainly she contributed for developing a variety of online services such as Daum Cafe, Tistory, Blog services, and many other innovative web & mobile services. Right before leaving Daum, she initiated the organization for incubating internal ventures of Daum, so was able to be a mentor for several entrepreneurs and deeply involved with the startup communities in Korea. Recently she founded Konolabs Inc, a tech-based startup and worked as a CEO and has started angel investment for early stage of startups. YJ received her M.B.A from MIT Sloan, and B.S in Computer Science from Hallyum University.