John Dean

John Dean is the Cofounder and CEO of WindBorne Systems, a Redwood City, California-based company operating the world's largest constellation of autonomous long-duration weather balloons. A Stanford electrical engineering graduate and former intern at SpaceX, NASA, and Lyft, Dean co-founded WindBorne in 2019 out of Stanford's Student Space Initiative after breaking four world records as undergraduates. The company raised a $15 million Series A led by Khosla Ventures in 2024, and its WeatherMesh AI model surpassed Google DeepMind's GraphCast as the most accurate global weather forecasting model, running on a fraction of the compute power. WindBorne's balloons have flown into Hurricane Milton and have set a new benchmark for how atmospheric data is collected at scale.