I build full-stack products and the AI workflows behind them.
I'm Longsheng, a full-stack developer focused on practical product systems, secure AI-assisted development, and reusable engineering assets.
This site is my working portfolio. It shows the products I build, the notes behind technical decisions, and the AI setup assets I maintain for Cursor, Codex, Claude Code, DevContainers, and project handoff workflows.
I care about the parts of software work that make teams faster without making systems fragile: clear requirements, maintainable UI, typed implementation, safe boundaries for credentials, and repeatable development process.
TECHNICAL FOCUS
AI is not the product. AI is leverage for clearer requirements, faster implementation, and better review loops. The durable value is the product, the workflow, the source code, and the judgment to know where automation should stop.
This is an independent personal site. When I mention tools like Cursor, Codex, Claude Code, Next.js, and Vercel, it's only to describe the tools I use and write about. I'm not affiliated with or endorsed by these companies.