Woonsup was born and raised in Seoul, Korea. After finishing his college education in Korea, he cam to the US to continue his academic education and research in Engineering. He got his PhD in Materials Science and Engineering from MIT, and he has been working in the aerospace industry since 1988. He has been active in Korean American churches as a deacon and an elder and his life-long journey to study the Bible and Reformed Theology continues on. History of the Reformation in 16th and 17th centuries leading up to the Westminster Assembly and the Westminster Standards has been one of his major interests.