Justin Waldron is an angel investor and serial entrepreneur best known as the co-founder of Zynga. See sector focus and contact routes.
Justin Waldron is an angel investor and serial entrepreneur best known as the co-founder of Zynga, the mobile social gaming company that IPO’d in 2011 with a $10 billion valuation. After leaving Zynga in October 2013, he shifted focus to angel investing and advising seed-stage startups, now holding investments in over 50 to 60 technology companies. His investment thesis centers on early-stage (seed) technology ventures, particularly in gaming, social platforms, and emerging tech like AI and blockchain, with a geographic focus on the U.S., especially San Francisco, and some activity in Asia. While his typical check size and lead/follow behavior are not publicly detailed, he is recognized as one of Business Insider’s Top 100 Seed Investors in 2021, suggesting active participation in early rounds. Notable portfolio companies include Substack, Lambda School (now Bloom Institute of Technology), Snackpass, Sprig, and Toro (acquired by Google). Waldron does not appear to have published distinctive public writing or a formal investment manifesto, but he mentors entrepreneurs through The Thiel Foundation’s Thiel Fellowship and serves as
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