* Developed new features for mobile digital wallets from frontend to backend using Flutter, Python, and Node.js
* Enhanced crypto payment experience by implementing in-app instant payment using deep-link and QR Code
* Refactored wallet backend written by aiohttp, reducing number of APIs by 50% and providing better logging
* Developed Node.js implementation of Manta protocol for mobile crypto payment system
* Automated deployment of wallet backend and Manta server by containerization using Docker
* Designed and implemented UI for control dashboard of blockchain-inspired secure database using React
* Created mobile-first responsive web console for blockchain-based traceability publisher using React and Redux