Hi, I'm Yunpeng.I'm Yunpeng.

I'm happiest in the gap between an idea and its first working prototype. This site is my workshop: what I'm building, what I'm learning, and the systems I'm making simpler.

Right now I build AI agents for engineering teams at Apple, along with the harness around them: the tools, context, and guardrails that make an agent dependable. An engineer asks a question in plain language and gets a grounded answer about their services, infrastructure, internal knowledge, and processes in minutes, instead of spending days reading wikis and tracking down the one person who knows.

Alongside that I build AI-powered productivity tools that shorten the whole path from idea to release: faster development, faster qualification, and fewer manual steps between a commit and production.

All of it sits on more than a decade of platform engineering. I lead DevOps and infrastructure work for Apple News, Weather, and Stocks. Before that I built next-generation CI infrastructure at Uber's Advanced Technologies Group, and earlier at Apple I took the News automation pipeline from hours to minutes.

I think like a founder and prototype like one. I can take a rough idea to something people can use quickly, and I care about design as much as architecture, because a tool only matters if people enjoy using it.