I will build ai agents, chatbots, and llm apps

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Longhui Zhao

About this gig

I will develop custom AI solutions tailored to your business needs, including AI chatbots, AI agents, automation systems, and full-stack AI applications. With 10+ years of full-stack engineering experience and strong expertise in modern AI technologies, I build scalable, production-ready systems that integrate AI directly into real business workflows.


I can help you build:

  • AI chatbots with custom knowledge bases
  • Retrieval-Augmented Generation (RAG) systems
  • AI agents and automation workflows
  • GPT / LLM-powered web applications
  • AI SaaS MVP platforms
  • Document analysis and AI data processing tools
  • AI API integrations (OpenAI, Claude, etc.)


Technologies I commonly use include Python, Node.js, React, Next.js, LangChain, vector databases, and cloud platforms such as AWS, GCP, and Azure.


My focus is not just building demos, but delivering reliable, scalable AI systems that can support real products and business growth.


If you need an experienced engineer to design and build a production-ready AI solution, feel free to contact me before placing an order so we can discuss your project requirements.

Get to know Longhui Zhao

Longhui Zhao

Full Stack AI Engineer for Production ready SaaS and AI platform development

  • FromChina
  • Member sinceJan 2026
  • Avg. response time1 hour
  • Languages

    Chinese, English
I’m a Senior Full-Stack & AI Engineer specializing in designing and building scalable SaaS platforms, AI-powered applications, and intelligent automation systems for growing businesses. What I Offer: • Full-stack development (React, Node.js, Python) • Secure APIs & SaaS architecture • AI agents, chatbots & LLM integrations • Automation & cloud deployment (AWS, Docker) Why Choose Me: • Production-ready, scalable systems • Clean architecture & maintainable code • Business-focused, senior-level execution

My Portfolio