Alex Rampell started building and selling software as a child, creating a popular Macintosh screensaver that he distributed as shareware, which shaped how he evaluates product distribution and user behavior as an investor today. As a serial fintech founder who co-founded around seven startups including TrialPay (acquired by Visa) before joining Andreessen Horowitz, he brings hands-on operator experience to understanding payment flows, interchange, and risk models rather than coming from a traditional finance background. Alex Rampell started building and selling software as a child, creating a popular Macintosh screensaver that he distributed as shareware, which shaped how he evaluates product distribution and user behavior as an investor today. As a serial fintech founder who co-founded around seven startups including TrialPay (acquired by Visa) before joining Andreessen Horowitz, he brings hands-on operator experience to understanding payment flows, interchange, and risk models rather than coming from a traditional finance background.