Ari Posner is a seasoned venture scout at Andreessen Horowitz since November 2024, focusing on investments through a16z's scout fund. As an angel investor at 181 Angels, Ari backs pre-seed and seed stage technology start-ups. Previously, Ari led the development of the AI Phone Rep at 11x.ai and played a key role in raising $24 million in Series A funding. Ari co-founded Hubster to create a platform transforming underutilized Airbnbs into day-workspaces and has further entrepreneurial experience as a co-founder of Minimap. Ari started the professional journey as an investment analyst at Singtel Innov8, contributing to startup investments in emerging technologies. Military service includes a role as a Sergeant First Class in the Israel Defense Forces. Academic credentials include a Bachelor of Arts in Philosophy and Business Management from Columbia University.
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