Charlie Marsh, Angel Investor

Charlie Marsh is an angel investor with a focus on AI and developer-centric ventures. His recent investments include Kernel, an AI infrastructure company, and Marimo, a software-focused startup, both at the seed stage. He participated in Kernel’s seed round, which raised $6.6 million, and Marimo’s seed round, which raised $5 million. These investments highlight his interest in supporting early-stage companies building tools for developers and AI-driven workflows. Charlie is currently a Member of Technical Staff at OpenAI, a role he began in 2026. He previously founded Astral, where he served as CEO for nearly four years, leading product development in developer tooling and AI integration.