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Hoàng Đạt
Full-stack Developer · System architecture & AI integration
Code that ships,
systems that last.
Hoàng Đạt holds a BSc in Computer Science (Ho Chi Minh City University of Science), with 5 years of building large-scale web apps from system architecture down to the user interface.
He has served as Project Manager and Full-stack Developer for an online auction platform (web + mobile with real-time bidding), built a clinical trial operations system for international markets, and shipped products for Vietjet Air, Vietnam's Ministry of Labour and the ILO. His standout strength: integrating LLMs (Gemini, OpenAI) into real products - document-based chat, automated labeling, and flexible, cost-efficient AI architectures.
At Chạm AI, Hoàng Đạt owns Build - stable, secure and scalable code architecture for client websites, AI Agents and automation systems.
From architecture to interface.
Frontend & mobile
Next.js, React, Angular, React Native - fast, UX-solid interfaces that run well on the web and on iOS/Android.
Backend & system architecture
NestJS, ASP.NET Core, FastAPI, PostgreSQL, Redis - architecture and database design shaped by the actual business problem.
LLM integration in production
Gemini, OpenAI - document-based chat (PDF, DOCX), automated labeling, model-switching architecture and cost-efficient caching.
Operations & CI/CD
Docker, GitHub Actions, real-time services, SQL query optimization - automated deployments that stay stable under load.
Battle-tested foundations.
Full-stack Developer
Building Clincove - a clinical trial operations platform (dual-portal model for research sites & sponsors): architecture, APIs, and LLM integrations (Gemini, OpenAI) for document-based chat and automated labeling. Previously integrated an AI Chat Agent (Chatbase) into the automated webinar platform eWebinar, with sentiment-based human handoff.
Project Manager & Full-stack Developer
Managed a team of 8 and personally built an online auction platform (web + mobile, real-time bidding, CI/CD with Docker + GitHub Actions). Also shipped Vietjet Air Sky Shop (in-flight retail), the XData data platform, an EDMS document system (OCR invoice recognition) and the ECMS inspection system for Vietnam's Ministry of Labour and the ILO.