Hi, I'm
Cao Dang Tinh.
I Build Things.
Fullstack Developer specializing in the JavaScript/TypeScript ecosystem. I architect scalable backend systems, design robust APIs, and deliver pixel-perfect user interfaces — from database design to CI/CD deployment.
Building Digital Products
That Scale.
I'm a Fullstack Developer based in Ho Chi Minh City, Vietnam, with over 4.5 years of hands-on experience across the entire web stack. I specialize in the JavaScript/TypeScript ecosystem — React.js, Next.js on the frontend, and Node.js, NestJS on the backend.
From architecting scalable backend systems and designing RESTful APIs to crafting pixel-perfect, responsive UIs — I manage end-to-end project lifecycles with a strong focus on performance optimization, clean code practices, and seamless deployment pipelines. I've worked with Web3 ecosystems, AI-powered SaaS products, and enterprise testing platforms.
Tools & Technologies
I Work With.
Focused on the JavaScript/TypeScript ecosystem with full-stack coverage — from responsive frontends to scalable microservices and cloud deployments.
Languages
Frontend
Backend
Cloud & DevOps
Tools & Workflow
Specialties
Where I've
Made Impact.
Building production systems across enterprise SaaS, Web3 infrastructure, and real-time applications.
Agest Vietnam
Fullstack Developer
- Led end-to-end development for the TestArchitect platform — scalable Frontend architectures with responsive React/Next.js frontends.
- Collaborated with cross-functional teams on system requirements, database schemas, and API integrations.
- Maintained strict code quality with ESLint/Prettier, clean code principles, and rigorous code reviews.
The Binary Holdings
Fullstack Developer
- Architected full-stack web applications and CRM systems with Next.js and Node.js/Express.js.
- Built centralized databases (MySQL, PostgreSQL) handling large-scale user data and system metrics.
- Implemented complex frontends with TailwindCSS and Framer Motion — achieving 90+ Lighthouse scores.
- Integrated backend services with Web3 technologies, managing secure auth flows and data synchronization.
RockyStudio
Fullstack Developer
- Developed and optimized real-time full-stack applications with seamless user experiences.
- Refactored legacy codebases to improve maintainability, rendering speed, and security.
- Active participation in system architecture discussions and Agile workflow optimization.
Things I've
Built.
From AI-powered SaaS to Web3 infrastructure — production applications serving real users at scale.
Full-stack AI-powered CV builder with RAG-based JD Matching that analyzes resumes against job descriptions, real-time Mock Interview via WebSocket streaming, ATS-optimized PDF export, and a complete resume management dashboard. Built with server-side rendering and a microservice architecture.
Chrome extension for QA automation — inspects web pages to auto-generate CSS/XPath locators with AI-powered suggestions, streamlines Page Object Model workflows, supports bulk element mapping, and exports directly to test automation frameworks, eliminating hours of manual locator coding.
Enterprise-grade no-code test automation platform used by QA teams globally. Built the frontend with complex state management for test case editing, real-time collaboration via WebSocket, cloud execution dashboards with live status tracking, and a responsive design system supporting 50+ UI components.
Virtual Dharma Hall — an AI-powered Buddhist learning platform where users converse with an assistant trained on eminent Masters' teachings. Features bilingual Vietnamese/English chat, voice recognition with AI-generated voice responses, and transparent source citations from Buddhist scriptures.
Web 2.5 infrastructure platform embedding blockchain capabilities into national-scale telco and banking apps across Asia, Africa, and the Middle East. Integrates the $BNRY token economy, on-chain rewards and airdrops, wallet management, and a regulatory-compliant settlement layer.
High-performance landing page engineered for Growth — implements structured data (JSON-LD), Open Graph optimization, Core Web Vitals scoring 90+, and conversion funnels driving investor and partner acquisition for the Web3 ecosystem.
The Binary Holdings CRM
Internal CRM system for the Web3 ecosystem — centralized dashboard for user growth analytics, content management, admin RBAC controls, quota management for AI chat/voice features, and real-time metrics tracking across multiple product lines.
Web3 hackathon platform connecting builders, mentors, and sponsors. Features hackathon creation & management, team formation workflows, project submission & judging systems, community channels via Discord/Telegram integration, and a leaderboard showcasing top blockchain builders.
Multi-agent AI chat platform supporting GPT-4, Claude, and custom AI agents. Features project-based conversation management, built-in agent templates (YouTube Writer, Cold Email, Pro Coder), file attachments, and Stripe-powered subscription billing with usage-based quotas.
All-in-one career platform featuring an AI-powered CV Builder with 20+ customizable templates and color themes, AI Mock Interview with real-time feedback scoring, and Video Interview recording for job preparation. Supports multi-step onboarding and Stripe-based subscription tiers.
Let's Work
Together.
I'm always open to discussing new projects, creative ideas, or opportunities to be part of your vision. Feel free to reach out through any channel below.