Stefan is a trained mathematician, an accomplished ultra marathoner, and a passionate, serial entrepreneur. Prior to co-founding Booksy, Stefan founded iTaxi, a Polish taxi-hailing company, and earlier founded and served as CEO of his own software development house.

Booksy is the fastest-growing appointment-based, mobile-first beauty marketplace connecting over +30M clients to over +130K beauty pros across the U.S., UK, Spain, France, Poland, and Canada. Booksy makes it possible for clients to find, book, and pay for their favorite services while equipping beauty pros with the tools they need to manage and grow their businesses. Founded in 2015, Booksy is used weekly for more than 1.3 million appointments and streamlined business services, positioning itself as the leading platform for ambitious professionals and their loyal customers.