David Heinemeier Hansson is a Danish programmer and entrepreneur known for creating the popular web development framework Ruby on Rails. As the co-founder and CTO of 37signals, he has pioneered a successful, bootstrapped business model that challenges traditional corporate norms. His authority stems from his hands-on experience building million-user platforms like Basecamp and HEY, and his best-selling books, which advocate for sane work cultures, remote flexibility, and minimalist project management.