👋 Hi, I'm yyh

I'm a product-oriented full-stack engineer focused on building scalable web systems and developer-friendly architectures.

I care about more than just shipping features —
I design systems that improve developer experience, consistency, and long-term maintainability.

What I focus on

• ⚛️ Frontend Architecture

  • React / TypeScript
  • Component systems, state management, UI semantics

• 🧩 Engineering Systems

  • Monorepos, CI/CD, testing, code quality
  • Scalable team workflows and infrastructure

• 🔗 Full-stack & BFF

  • Node.js, API design
  • Bridging product logic and frontend systems

• 🤖 AI-driven Products

  • LLM applications and developer tooling
  • Turning AI into real, usable workflows

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I enjoy building systems that are clear, consistent, and easy to evolve.