About

Julian Shapiro is an entrepreneur, angel investor, software developer, and writer based in the United States. He is the founder of Julian.capital, a seed-stage venture fund investing in frontier tech, hardware, and biotechnology.

In the tech ecosystem, he founded Demand Curve—a premier startup growth training program supported by Y Combinator—and created Velocity.js, an influential high-performance JavaScript animation engine used by millions of websites including Uber, WhatsApp, and Mailchimp. He has invested in and advised dozens of high-growth tech companies.

On his personal site julian.com, he publishes acclaimed, comprehensive guides deconstructing complex skills from first principles. His deep-dive playbooks on non-fiction writing, storytelling, mental models, decision-making, and growth marketing are celebrated globally for their visual clarity, structured frameworks, and immediate real-world utility.