David Heinemeier Hansson

Creator of the Ruby on Rails web development framework, Co-owner and Chief Technology Officer (CTO) of 37signals (now Basecamp), a software company specializing in project management tools.

About

David Heinemeier Hansson is a Danish programmer and entrepreneur known primarily for creating Ruby on Rails, an influential web application framework.
He is also a co-owner and CTO of 37signals, the company behind the popular project management tool Basecamp.
His work has significantly shaped modern web development practices, and he is a recognized speaker and author on software development and entrepreneurship.