David Baszucki (; born January 20, 1963), also known by his Roblox username david.baszucki, formerly builderman, is a Canadian-born American entrepreneur, engineer, and software developer. He is best known as the co-founder and CEO of Roblox Corporation. He previously co-founded and served as the CEO of Knowledge Revolution, which was acquired by MSC Software in December 1998.
Source : Wikipedia