Sara Du, Angel Investor

Sara Du is the founder of Ando, a new communication platform designed to enhance collaboration between humans and AI agents. A self-taught engineer with a strong background in design, she focuses on building products that blend technical depth with intuitive user experiences. Before Ando, Sara co-founded Alloy, a leading identity decisioning platform, where she now serves as a board member. Outside of her ventures, she explores language theory, technology history, and market dynamics, often reflecting on how design and systems thinking intersect. Sara has made investments in over fifty startups since 2019, primarily at the pre-seed and seed stages. She supports founders with guidance on marketing strategy, brand development, and design, drawing on her own experience as a builder and operator across multiple high-growth startups.