Alex is a managing partner of 137 Ventures, an investment firm focused on private technology companies. He also serves as the chairman of ImmunePath, a biotechnology company that he co-founded, which develops cell therapies to treat the effects of radiation exposure. Previously, Alex was an entrepreneur in residence (EIR) at Founders Fund, where he focused on deep science investing. While there, he played a principal role in the acquisition of Powerset, a natural language search company, by Microsoft. Alex also led the diligence processes that resulted in their investments in Halcyon Molecular, Navia Systems and SpaceX. From 2005 to 2007, he served as the chief architect of what has now become Happstack, today's leading open-source Haskell application server. In 1998, Alex founded Shop.com, a multi-vendor shopping and comparison website, which became an Idealab! Company that he eventually sold to Altura Ventures in 2003. In 1995, he founded Interband, an advertising management and measurement company, which he sold to Winstar Communication in 1997. Earlier in his career, Alex worked as a researcher at the Laboratory of Sensorimotor Research at the National Eye Institute and as a programmer for the Department of Cognitive Neuroscience at New York Presbyterian Hospital. Alex holds a bachelors degree in cognitive science from Brown University.