David Heinemeier Hansson, the Danish programmer and entrepreneur, has had an outsized influence on how modern web applications are built, most notably as the creator of a widely used development framework.
His work helped shape a generation of web software, and the company he co founded became known both for its products and for its outspoken views on how technology firms should operate.
Hansson has combined coding with writing and advocacy, weighing in on debates about software, business and the culture of the tech industry.
His career reflects how Danish talent has reached deep into the foundations of the global software world.
