Vashisht Madhavan

I help people and teams build with AI — from first prototype to production. I've spent a decade building AI at companies like Amazon, Uber, and a Y Combinator startup I co-founded as CTO. My edge: I don't just use AI tools, I train the models underneath them — LLMs, text-to-video, voice — so I can teach you how these systems actually work, not just which buttons to press. Some things I've built: AI voice agents that automated thousands of business phone calls per month (taken from an empty repo to paying enterprise customers), the post-training behind user-facing video-generation features like Pikaffects, and today, the reinforcement learning behind code-generation models — the kind that power tools like Claude Code, Cursor, and Copilot. Here's what we can do together: build LLM apps, chatbots, AI agents, and RAG pipelines; set up AI automations and workflow automation that remove manual work; master prompt engineering and get real leverage from ChatGPT, Claude, and agent coding tools like Claude Code and Cursor; go deeper with fine-tuning and open-source models (Hugging Face) when off-the-shelf isn't enough; and pressure-test your stack and architecture before mistakes get expensive. And because I teach from the model up, what you learn stays useful as the tools and models keep changing. Whether you're a founder building an AI startup, an engineer adding AI to your product, or a non-technical builder starting from no-code tools — tell me what you want to build, and let's ship it.