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👋 About Me

Fullstack engineer with 7+ years building high-performance backend systems and modern web applications. I specialize in Java Spring Boot microservices, Node.js/NestJS APIs, and React frontends — with production experience across DeFi platforms, e-commerce, and high-traffic consumer apps.

const thang = {
  focus:    ["Java Spring Boot", "Node.js / NestJS", "React / TypeScript"],
  backend:  ["Microservices", "REST APIs", "Event-Driven Systems", "WebSockets"],
  frontend: ["React", "Next.js", "SvelteKit", "Real-Time Dashboards"],
  database: ["PostgreSQL", "Redis", "SQL Server"],
  scale:    ["350K+ MAU", "200M+ impressions", "$38B+ trading volume"],
};

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⚙️ Backend Engineering

Java / Spring Boot Microservice architecture & domain-driven design Event-driven systems with message queues (RabbitMQ, Kafka) High-volume data indexing & processing pipelines REST/gRPC service contracts, test suites, CI/CD	Node.js / NestJS Real-time APIs and WebSocket services GraphQL & REST API design with versioning Low-latency data feeds for high-frequency systems Auth, rate-limiting, background job architecture
Data & Infrastructure PostgreSQL schema design & query optimization Redis caching, session management, pub/sub Docker containerization & service orchestration	Additional Languages Golang for performance-critical services .NET / C# for enterprise backend systems Rust for systems-level and blockchain-adjacent work

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💻 Frontend Development

Frameworks & Language

Focus Areas 📊 Real-time dashboards and data visualization ⚡ WebSocket-driven live UI (leaderboards, feeds, prices) 🔗 Web3 wallet integration (MetaMask, WalletConnect, Phantom) 🎯 Performance optimization and responsive design

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🎯 Featured Projects

Project	Stack	Highlights
Holdstation DeFi Platform	Java · NestJS · React · PostgreSQL · Redis	350K+ MAU, $38B+ volume, #1 DEX on zkSync. Built microservices for indexing, referral engine, leaderboards, and real-time APIs
Worldchain Mini-Apps	Node.js · React · WebSocket	200M+ impressions, 30M+ sessions, 700K+ verified users. Optimised for massive concurrent traffic
NFT City Marketplace	NestJS · SvelteKit · PostgreSQL	Layer-2 NFT platform with lazy minting, royalty management, and auction engine
AI Agent Launchpad	Spring Boot · NestJS · React	Portfolio tracking, cross-chain asset aggregation, real-time valuation for 10+ launch projects

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🔬 Currently Exploring

• 🏗️ Layer-2 scaling and ZK-proof systems
• 🔑 Account abstraction & smart account UX patterns
• 🤖 AI-assisted developer tooling
• 📐 Modular backend architecture patterns

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🤝 Let's Connect

📧 [email protected]  |  🌐 thangnn-portfolio.vercel.app

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Open to fullstack, backend, and API engineering roles & collaborations

"Make it work, make it right, make it fast."