> Markdown version of [/@yan-cui](https://www.wearedevelopers.com/@yan-cui). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Yan Cui Developer Advocate at Lumigo making sense of production LLMs and cloud architecture. ## About Yan Cui builds developer resources and tackles cloud architecture challenges at Lumigo. As an AWS Hero, he focuses on the practical realities of taking complex backend systems to production. His recent work explores the friction of applied AI. After building an AI-powered code reviewer for a client in just 80 hours, he has been sharing the unexpected hurdles of mapping large language model prototypes to coherent user experiences. ## Past Sessions ### World Congress 2025 · July 9, 2025 Berlin, Germany - [How we built an AI-powered code reviewer in 80 hours](https://www.wearedevelopers.com/videos/1511-how-we-built-an-ai-powered-code-reviewer-in-80-hours) · 30 min · 🎥 Watch recording ## Videos - [How we built an AI-powered code reviewer in 80 hours](https://www.wearedevelopers.com/videos/1511-how-we-built-an-ai-powered-code-reviewer-in-80-hours) · Yan Cui ## Links - [X](https://twitter.com/theburningmonk) - [LinkedIn](https://www.linkedin.com/in/theburningmonk)