Hung L.

🏆 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐀𝐈 𝐄𝐱𝐩𝐞𝐫𝐭 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 (𝐓𝐨𝐩 𝟏%) · 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 · I help startups and businesses build AI SaaS products beyond the demo stage: LLM/RAG apps, AI agents, automation, and full-stack MVPs. I can own the backend, frontend, AI workflow, and deployment, so you don’t need separate developers for each layer. I also work with AI tools like Claude Code, OpenAI Codex and Cursor to move faster across architecture, implementation, debugging, testing, and code review, while still personally reviewing and verifying the plan, specs and code that goes to production. I have 5+ years of experience across AI engineering and full-stack development, with hands-on work in fintech, eKYC, OCR/computer vision, internal AI tools, knowledge assistants, automation, and SaaS products. I don’t use AI as a replacement for engineering judgment. I use techniques such as Agent Skills, MCP integrations, custom subagents, hooks, repo-level instructions, context engineering, parallel agent workflows, automated test generation, code-review agents, and CI verification to give coding agents the right context and guardrails. This helps me deliver faster without turning the codebase into unreviewed AI-generated code. 𝟏/ 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐰𝐢𝐭𝐡: ▪ AI SaaS MVP development from idea to working product ▪ LLM/RAG applications for documents, internal knowledge, search, and support ▪ AI agents and multi-step automation workflows ▪ Custom AI chatbots with private knowledge base integration ▪ Backend API development with FastAPI, Django, Flask, Node.js, and Golang ▪ Full-stack web apps using React.js, Next.js, PostgreSQL, MongoDB, and Docker ▪ OCR, computer vision, ID/document extraction, and eKYC systems ▪ Web crawling, data pipelines, dashboards, and internal automation tools ▪ Mobile and cross-platform apps using Flutter and Android 𝟐/ 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬: ▪ Programming Languages: Python, Golang, JavaScript, TypeScript, Rust, Dart ▪ Backend: FastAPI, Django, Flask, Node.js, Celery, REST API, PostgreSQL, MongoDB ▪ Frontend: React.js, Next.js, JavaScript, responsive UI development ▪ AI/ML: LLM, RAG, LangChain, Ollama, PyTorch, TensorFlow, OpenCV, YOLO ▪ AI Product Development: AI agents, chatbots, document Q&A, knowledge retrieval, AI automation ▪ Data & Automation: Web crawling, Scrapy, data extraction, data processing, workflow automation ▪ DevOps: Docker, GCP, API deployment, production support ▪ Mobile: Flutter, Android, cross-platform application development 𝟑/ 𝐒𝐨𝐦𝐞 𝐡𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬 𝐟𝐫𝐨𝐦 𝐦𝐲 𝐰𝐨𝐫𝐤: ▪ Built a multi-agent AI news discovery system that processed 150-300 articles per day, reduced duplicate content by around 70-85%, and delivered daily digests plus real-time alerts for important fintech/business updates. ▪ Developed an internal AI customer-support assistant that helped agents search company knowledge faster, reducing average lookup time from 3-5 minutes to under 1 minute per ticket. ▪ Built a local LLM/RAG-style internal wiki assistant using Ollama, document retrieval, and metadata filtering over thousands of internal pages. ▪ Developed eKYC backend services using Golang and AI/OCR pipelines, helping reduce onboarding time by up to 95%. ▪ Built Vietnamese ID Card OCR and computer vision systems using YOLO, TensorFlow, PyTorch, OpenCV, and custom image-processing algorithms. ▪ Created full-stack systems using Python, FastAPI, Django, Flask, Node.js, React.js, Next.js, Flutter, PostgreSQL, MongoDB, Docker, and GCP. 𝟒/ 𝐖𝐡𝐚𝐭 𝐦𝐚𝐤𝐞𝐬 𝐦𝐞 𝐝𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐭: ▪ I can work across the full product lifecycle, from architecture and backend APIs to AI workflows, frontend UI, deployment, and iteration. ▪ I understand both AI experimentation and practical software delivery. ▪ I focus on business results, not just technical implementation. ▪ I communicate clearly, ask the right questions, and help clients avoid overbuilding too early. ▪ I can move fast for MVPs while still keeping the system clean and scalable. I’m especially interested in projects where AI is not just a “nice feature,” but a real part of the product: reducing manual work, improving search and decision-making, automating workflows, or helping users interact with complex data more easily. If you’re building an AI-powered SaaS, internal automation tool, RAG system, chatbot, OCR pipeline, or MVP that needs both strong AI thinking and full-stack execution, I’d be happy to help you turn it into a reliable product.