Hello, I'm Li Yan

Creative Full Stack Engineer

Specializing in AI-driven systems, LLM workflows, and scalable web platforms

About Me

Senior software engineer with experience building AI-driven products, LLM evaluation pipelines, and real-time voice systems that cut operational effort and improve reliability.

I build end-to-end web platforms and data-rich interfaces—from responsive React dashboards to backend services—translating complex data into clear, actionable experiences.

🤖

AI & LLM Systems

Voice agents, evaluation pipelines, and ML classification in production

🧩

Full-Stack Product

React/TypeScript interfaces backed by robust services and APIs

📊

Data & Observability

Dashboards, query tooling, and insights for complex system health

Featured Work

Voice AI

Multi‑Agent Voice System

Built outbound voice agents to verify hotel reservations, cutting FinOps labor by 60% with end‑to‑end call handling.

LLM Quality

LLM Evaluation Framework

Designed a BrainTrust‑based eval pipeline to train, validate, and benchmark prompt/model updates against a golden dataset.

APM AI

APM AI Assistant

Delivered a chat assistant and responsive dashboards that turned APM metrics into actionable insights for troubleshooting.

Audio ML

Voice Classifier

Trained and deployed a WavLM-based model to detect human vs. automated voices with 95% accuracy and sub‑200ms latency.

Get In Touch

I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision.

✉️ E-mail 🔗 Resume 💼 LinkedIn