My Story

I’m Siqi Liu, also known online as Yosgi. I build software and write about the systems work behind modern web products: frontend architecture, digital twins, performance engineering, and AI tooling.

This site is my public notebook for work I want to understand clearly enough to explain:

  • Software engineering patterns that hold up under real production constraints
  • Lessons from digital twin and 3D application work
  • Notes on AI-assisted development, tooling, and evaluation
  • Occasional reflections on investing, reading, and long-term learning

Tech Stack

  • Frontend Development: HTML, CSS, JavaScript, React, Vue
  • Backend Development: Node.js, Python, Go
  • Databases: MySQL, MongoDB, Redis
  • Tools: Git, Docker, Linux

Current Focus

  • Building reliable interfaces for data-heavy and real-time systems
  • Making complex technical topics easier to explain and retrieve
  • Connecting engineering practice with clearer writing and research-style documentation

Contact

If you’d like to discuss engineering, product systems, technical writing, or collaboration, you can reach me here:

Thanks for reading.