A few years ago, I met a Brazilian speaker who traveled the world speaking to software engineers. He had been around the world several times. He called himself

A few years ago, I met a Brazilian speaker who traveled the world speaking to software engineers. He had been around the world several times. He called himself a "brand ambassador" and an "evangelist". He speaks 5 languages and loves chess, photography and gifs. His talks were very entertaining with a very 'developer' style of humor. At his conferences he sold books on both professional topics and his hobbies. The companies paid him only for his travels, so most of the time he stayed in couchsurfing. There are many jobs that are challenging and sound cool: Robotics, artificial intelligence engineer, blockchain, 3D printing, augmented reality, virtual reality, user experience, game developer, cybersecurity engineer.