Ha N.

Need a production-ready Trading Bot, seamless Binance API integration, or high-performance Web3 systems? I am a Full-Stack Engineer with 12+ years of software engineering experience, specializing strictly in Fintech frameworks, real-time data architectures, and Blockchain integration. I bridge the gap between heavy backend logic and real-time user dashboards. What I build and deliver for your business: • Fintech & Trading Automation: Advanced Binance API (Futures/Spot) systems, automated TP/SL risk management, signal processing, and high-frequency trading bots. • High-Scale Backend APIs: Node.js/TypeScript coupled with Express, REST, and secure WebSocket data streams managed via PM2/Docker. • Web3 & Blockchain Engineering: Solidity smart contracts (DeFi protocols, limit-order matching, ERC-20/ERC-1155) and off-chain Node.js Relayer bots. • Real-time Dashboards: Vue 3 + TypeScript + Pinia administrative panels integrated with real-time trading charts. • Cross-Platform Mobile: Complete Flutter applications seamlessly integrated with secure backend infrastructure. Proven Case Studies: → Sovryn Protocol (Bitcoin L2): Developed core smart contracts for Spot/Margin trading and built a custom Node.js Relayer bot for on-chain order matching. → Binance Automation: Engineered a multi-user automated trading bot featuring advanced backtesting modules and live Vue 3 charting data. → VietRace365: Scaled a national sports platform managing thousands of concurrent participants with Strava API sync and payment gateways. I write clean, documented code and provide transparent, async milestone updates. Core Stack: Node.js • TypeScript • Vue 3 • Flutter • Solidity • Web3.js • Docker • PostgreSQL • MongoDB • WebSockets. 📩 Tell me your project goal—I'll reply with a scoped technical plan within 24 hours.