Max Levchin

Maksymilian Rafailovych "Max" Levchin}}}} (born July 11, 1975) is a software engineer and businessman. In 1998, he co-founded the company that eventually became PayPal. Levchin made contributions to PayPal's anti-fraud efforts and was the co-creator of the Gausebeck-Levchin test, one of the first commercial implementations of a CAPTCHA challenge response human test.

He founded or co-founded the companies Slide.com, HVF, and Affirm. He was an early investor in Yelp and was their largest shareholder in 2012. He left a leadership role in Yelp in 2015.

Levchin was a producer for the movie ''Thank You for Smoking''. Provided by Wikipedia