I will build backend, ai agent and rag system for enterprise

J
john_gjg
J
john_gjg
John.G
build backend, ai agent and rag system for enterprise
build backend, ai agent and rag system for enterprise
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build backend, ai agent and rag system for enterprisebuild backend, ai agent and rag system for enterprisebuild backend, ai agent and rag system for enterprisebuild backend, ai agent and rag system for enterprise

About this gig

I develop C/C++ & fullstack solutions, AI Agent and RAG systems. With paymentgrade highconcurrency architecture experience, I deliver wellcommented, milestonebased code for enterprise and fintech projects.

  • Programming language

    • C&C++

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Security

  • Frontend framework

    • Vue.js

  • Backend framework

    • FastAPI
    • Flask
    • Node.js

  • AI & low/no code builders

    • Cursor

Get to know John.G

John.G

Full stack Engineer, AI Agent and RAG, Smart Card and Transit System, Embedded a

  • FromChina
  • Member sinceAug 2026

  • Languages

    Chinese, English
I'm a senior full‑stack AI & embedded engineer with 15+‑year C/C++ experience, 7‑year senior background at Alipay. I build desktop apps, Linux security services, transportation & card‑issuing systems. I have 3‑year full‑stack AI hands‑on experience with deployed scheduling‑optimization algorithms. Co‑author of 6 national transport standards; led crypto‑security, transit interconnection & Alipay AI car‑selection Agent projects. 12 granted invention patents; delivered dozens of 0‑to‑1 solutions for smart mobility, new‑energy, plant & mine industrial‑AI inspection.

My Portfolio

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