Pieter Levels is an indie hacker who makes over $3M/year with 0 employees, while traveling the world. He built successful projects like RemoteOK and NomadList, using unconventional marketing tactics like buying a billboard in front of Apple's headquarters. His journey started with a YouTube channel and he later launched 12 startups in 12 months challenge. His AI projects like PhotoAI and AvatarAI are also successful. Pieter is an inspiration for aspiring entrepreneurs.