With over 40 startups, the self-taught developer has claimed his various business ventures now generate over $2.2 million in revenue. This story is available exclusively to Business Insider subscribers. In 2014, Levels met other digital nomads while living in Chiang Mai, Thailand. A decade and millions of users later, Levels said the best cities he's been to are still Bangkok and Chiang Mai. While Levels said Bangkok is getting more expensive, he still recommends Chiang Mai as a more affordable option.

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