Sean Cai

Sean Cai is a dedicated investor with a focus on early-stage companies and AI infrastructure. He is an Investor at Costanoa Ventures and a Weekend Partner at Weekend Fund, where he actively sources deals and writes angel checks. His investment philosophy emphasizes being a hands-on, founder-first partner, assisting with engineering, go-to-market strategies, and product metrics, as detailed in his article about joining Costanoa. costanoa+1

Sean is deeply involved in the entrepreneurial ecosystem, particularly at Cornell University. He founded 'Startup Hours,' a weekly meetup connecting student entrepreneurs, and served as President of Life Changing Labs. His experience extends to being a Venture Fellow at General Catalyst and Hummingbird Ventures, where he focused on AI infrastructure and built extensive networks. cornell+3

Beyond traditional venture roles, Sean is an active builder, pursuing multiple projects in technology. These include co-founding Tourable, a 360-degree video conferencing platform for virtual tours, developing 'Learn Subito' for consumer AI in music, working on state-of-the-art Optical Music Recognition, and building software for API access to daily interactions, reflecting a strong technical and product development background. spotify+2

Sean demonstrates a lifelong curiosity and diverse interests outside of his professional endeavors. He enjoys fencing and exploring obscure historical topics, alongside a passion for geography, evidenced by his self-proclaimed skill as a top-tier map trivia player. weekend