Long N.

Hi! I'm Long Nguyen, a Top Rated AI-Native Full Stack & Mobile Developer with 4+ years of experience building production web, mobile, and AI-powered applications. I specialize in React Native, React.js, Next.js, Node.js, and NestJS, with hands-on experience building AI applications using LLMs, RAG, and AI Agents. I've built and shipped production applications serving 100,000+ users with a 98%+ crash-free rate across iOS and Android. What I Can Help You With: AI Application Development - LLM integration and AI-powered features - RAG pipelines and semantic search - AI Agents and multi-agent workflows - MCP integrations and agent orchestration - Third-party integrations and AI data pipelines Full Stack Development - React.js, Next.js, Node.js, and NestJS - REST APIs, authentication, and backend architecture - PostgreSQL, MongoDB, Firebase, and Supabase Mobile App Development - React Native and Expo - Cross-platform apps for iOS and Android - Native modules and third-party SDK integrations - Push notifications and real-time features Cloud & Infrastructure - AWS, Firebase, and Supabase - CI/CD automation and deployment - System architecture and performance optimization - Multi-tenant systems and access control Why Work With Me? - 4+ years of hands-on software engineering experience - Experience building and shipping production products - Strong understanding of Clean Architecture and scalable systems - Able to work across frontend, backend, mobile, and AI - Self-driven mindset with a focus on quality and delivery 100% Job Success | $19K+ Earnings Whether you need a full-stack application, a cross-platform mobile app, or AI-powered features integrated into your product, I can help you design, build, and ship it. Let's discuss your project!