Matthew David "Matt" Welsh is a computer scientist and software engineer at xnor.ai, which he joined after spending eight years at Google. He was the Gordon McKay Professor of Computer Science at Harvard University and author of several books about the Linux operating system, several Linux HOWTOs, the LinuxDoc format and articles in the Linux Journal. In November 2010, five months after being granted tenure, Welsh announced that he was leaving Harvard. He is a 1992 graduate of the North Carolina School of Science and Mathematics.