Max Levchin is a Ukrainian-American entrepreneur and computer scientist, best known as a co-founder of PayPal. He played a significant role in developing the company's technology and was instrumental in its growth during the late 1990s. Levchin's expertise in software engineering helped shape the online payment industry. In addition to PayPal, Levchin has founded and invested in several other companies, including Slide and Affirm. He is recognized for his contributions to the tech industry and has been involved in various ventures that focus on innovation and financial technology.