Hire the Best JavaScript Developers
in China

A results-oriented Salesforce Specialist with nearly 8 years of project experience, combining technical development and business analysis backgrounds. Proficient in designing, developing, and implementing customized Salesforce solutions based on business requirements, covering requirement analysis, process optimization, system integration, and user training. Experienced in collaborating with cross-functional teams and driving digital transformation. Hold a 10-year U.S. B1/B2 visa, facilitating international travel and project support. Salesforce Certifications: 1. Salesforce Certified Administrator 2. Salesforce Certified Platform Developer I 3. Salesforce Certified Platform Developer II 4. Salesforce Certified JavaScript Developer I 5. Salesforce Commerce Cloud Developer Certification 6. Salesforce Marketing Cloud Administrator 7. Salesforce Health Cloud Accredited Professional

🚀 I build production-grade AI apps that actually ship on the App Store — not prototypes that die in TestFlight. 100% Job Success across 43 projects, 2,233 hours, and $60K+ delivered on Upwork. Most recent: a full end-to-end AI skincare platform live on the Japan App Store — built solo from Figma to launch. 📱 React Native app (iOS & Android): AI face scan, real-time voice chat via OpenAI Realtime API + WebRTC, skincare routine builder, Stripe + RevenueCat subscriptions, Google Maps clinic finder. ⚙️ FastAPI backend: 20+ API route groups, JWT auth, RAG-powered recommendation engine (LangChain + Pinecone), Stripe payment processing. 🧠 AI image analysis microservices: dual-mode skin analysis pipeline combining MediaPipe / OpenCV computer vision AND GPT-4 Vision, with async Celery job queue and S3 storage. What I do, end-to-end: ✅ AI / LLM: OpenAI / Anthropic / LangChain / RAG (Pinecone) / Realtime Voice AI / Computer Vision ✅ Mobile: React Native (Expo) / iOS / Android / Stripe / RevenueCat / In-App Purchase / Push ✅ Backend for AI: FastAPI / NestJS / PostgreSQL / Vector DBs / Celery ✅ Infrastructure: AWS / Docker / Redis / CI/CD I work best with founders and product teams who need an engineer who can take an AI idea from Figma to App Store solo — including the LLM/RAG/agent layer, payments, and infra — without hand-holding. If your project has an AI component (chatbot, RAG, face analysis, voice, agent workflow) and a real ship date, message me with the rough scope. I usually reply within a few hours and can offer a 1–3 day free pilot so we can validate fit before committing to the full build.

Hi there! 👋 I'm a passionate developer ready to bring your ideas to life with clean, efficient, and reliable solutions. I'm an Expert Python/JavaScript Developer with extensive experience in building AI-powered solutions, chatbots, and scalable web applications. Over the years, I've successfully delivered end-to-end projects using technologies like FastAPI, Django, Node.js, and AWS, integrating advanced AI models such as ChatGPT and Claude. Whether you need a smart chatbot, a robust backend system, or a complete web/API solution — I’m here to turn your ideas into reality. My code is clean, secure, and optimized for performance. By working with me, you get: ✅ Clear communication ✅ Fast and reliable delivery ✅ A fully functional product — from concept to deployment Let’s build something great together!

I have been involved in front-end development of some medium sized web management systems and have 5 + years of front-end development experience. - ★★★ Vue/JavaScript/HTML/CSS - ★★ Node/React/jQuery/Git - ★Python