Kirill Bigai, the cofounder and CEO of learning platform Preply, had to take on a consulting gig while getting paid almost nothing building the business.
Source: [Fortune](https://fortune.com/2026/08/23/kirill-bigai-ceo-of-1-2-billion-learning-platform-preply-it-all-started-with-online-search-for-english-tutor/)