At Serino Systems, Inc., I developed applications for payment terminals and Transaction Management Systems, including transaction workflows, validation, asynchronous processing, and secure communication with payment services.
I built workflows and interfaces for cashier terminals, self-service kiosks, and Kitchen Display Systems. I also developed React.js web interfaces, React Native features, and Node.js services with REST APIs and WebSocket-based real-time updates.
At Supergene Global Services, Inc., I developed interactive web applications and games, co-developed a 2D match-3 game, and created a custom image and video editing library for a production mobile social media application.
