Vivian Midha Shen

Vivian Midha Shen is a founder, CEO, and angel investor who has built companies from zero to $50M+ in revenue and millions of users. Currently, she is a Visiting Partner at Y Combinator, where she invests in founders at the zero to one stage.

Previously, she founded Acely, an AI tutoring platform that scaled from $0 to millions in ARR between 2024 and 2025, making it one of the fastest-growing AI businesses in education. Before Acely, she co-founded Juni Learning (YC W18), the online academy for kids' coding and math that helped define live, one-on-one online learning. 

Earlier in her career, Vivian worked as a software engineer at Google, a consultant at McKinsey, and led product at an AI commerce startup. She holds a B.S. in Computer Science with a minor in Creative Writing from Stanford University.