Full Stack Developer
Scale AI
Aug 2024 - Apr 2025 (9 months)
• Co-developed a blockchain-based cross-border payment platform using React, Express.js, and TypeScript, enabling USD/BRL/EUR transfers with 30% lower fees than legacy providers. • Developed and maintained RESTful APIs with Express.js for FX transactions, wallet ops, and user activity, supporting $5M in daily volume. • Integrated Web3.js in React frontend for secure wallet creation and Stellar network interactions, including client-side encryption of private keys. • Developed responsive UI components in React fortransaction dashboards, real-time updates, and multi-currency views. • Delivered a React Native micro-investment app in 8 weeks, featuring real-time portfolio tracking for 2k+ users. • Tuned PostgreSQL queries and added smart