Yun-Fang Juan, Angel Investor

Yun‑Fang Juan is an entrepreneur, software engineer, and angel investor with two decades of experience building products across web search, targeted advertising, e‑commerce, fintech, and bioinformatics. She worked at Yahoo! on web search and data mining, and later joined Facebook as one of the founding engineers of Facebook Ads, helping scale it into a multi‑billion‑dollar business. She also led the coefficient project at Facebook, developing infrastructure to characterize relationships across the social graph. Her career reflects a consistent focus on product innovation and technical leadership, from large‑scale ad systems to experimental ventures like Zumplings, a robotic dumpling shop. Yun‑Fang emphasizes persistence and iteration in building products, combining engineering rigor with entrepreneurial creativity. As an angel investor, Yun‑Fang has backed startups in data, AI, and consumer platforms. Her investments include Buildstock (construction tech), Dimension (data infrastructure), Spruce (real estate tech), Infracost (cloud cost management), Empowerly (education), Iterable (marketing automation), MatterPort (3D imaging), Envoy (workplace technology), Women.com (media), and Love With Food (consumer marketplace), reflecting her interest in ventures that scale across industries.