I'm Theo Jiang, software engineer at Microsoft, where I build security and auth features for MCP.

My day job is making AI agent platforms secure — OAuth flows, identity management, zero-trust architectures at global scale. The kind of infrastructure that has to work perfectly and invisibly, because when auth breaks, everything breaks.

Outside of work, I build things that interest me. Right now that's an autonomous trading system — multi-agent LLM architecture that discovers, debates, and executes trades. It's the opposite of auth work: high uncertainty, fast feedback, and the market doesn't care about your test coverage.

I believe the best engineers ship first and optimize second, read the error message before asking for help, and know that a system with bad data is worse than no system at all.