Hi, I'mPan Chao
AI Engineer & Full Stack Developer
I help businesses build modern AI-powered applications.
Services & Expertise
End-to-end solutions from concept to deployment. I specialize in turning complex requirements into elegant, scalable systems.
LLM Apps & Agents
Build intelligent AI applications with LangChain, LangGraph, RAG, tool calling, and workflow orchestration.
AI Chatbots
WhatsApp, web, and customer service chatbots with knowledge bases, ticketing, and CRM integration.
Full-Stack Web
Modern web applications with React/Next.js frontend and Node/NestJS/.NET backend.
Mobile Apps
Cross-platform mobile applications using React Native and Expo.
Automation & DevOps
Docker containerization, CI/CD pipelines, serverless functions, and cloud infrastructure.
Recent Projects
A selection of projects I've worked on. Click to see the full case study.
WhatsApp AI Customer Service Bot
Reduced manual ticket processing by 85% for e-commerce client using AI-powered automation.
AutoRating & Dex
Multi-tenant SaaS system with RPA automation for document processing and rating workflows.
Cross-border E-commerce & Warehouse System
Comprehensive e-commerce backend with multi-platform integration (Amazon, eBay, Shopify) and warehouse management.
CHC CRM
Customer relationship management system that improved sales workflow efficiency.
Skills & Technologies
A decade of experience across the full stack, from AI/ML to cloud infrastructure.
AI / LLM
Frontend
Backend
Mobile
Database
Cloud & DevOps
Work Experience
From software engineer to technical lead to independent consultant — a journey of continuous growth.
Freelance Full-Stack Development Engineer
Self-employed
Upwork Top Rated Plus freelancer delivering 30+ projects. End-to-end design and development of AI, web, and mobile solutions for global clients.
Senior Engineer & Technical Lead
Ventmere Ltd.
Led development of CHC CRM system. Managed Docker containerization and deployment infrastructure. Full-stack development with Node.js, .NET, and React.
Web Development Engineer
NewDim China Inc.
Developed GIS and 3D visualization systems. Built enterprise web applications with Angular, Vue, ASP.NET MVC, and WPF.
Software Development Engineer
Shinetech Software Inc.
Delivered web solutions for international clients. Agile team collaboration and cross-cultural communication.
Bachelor of Computer Science
Harbin Institute of Technology (HIT)
Let's Build Together
Have a project in mind? I'm always open to discussing new opportunities and interesting challenges.
📍 Remote | UTC+8 | Hong Kong