Vinicius Rossini

Developed a mobile application for parents to monitor their children's food consumption at school, including balance top-ups, daily/weekly spending limits, and consumption restrictions. Designed and implemented state management, dependency injection, and routing using GetX. Integrated backend and payment APIs with continuous improvements based on user feedback and business needs. Developed an Android app focused on self-service kiosks integrating native Kotlin services for facial recognition, card payments, and printing.

Developed a ride-hailing platform with payment API integration and real-time localization through WebSocket, in addition to an e-commerce application featuring product catalog management, checkout flow, and third-party payment gateway integration. Designed and implemented a clean codebase using the Bloc design pattern based on user specifications. Collaborated with UI/UX and backend teams to solve key usability challenges and define API rule sets. Integrated Firebase Cloud Messaging to enhance active user engagement and ensure timely transactional updates.

Developed a tablet application for fleet tracking integrating WiFi, GPRS, GPS, and Bluetooth for vehicle sensors. Implemented the MVVM design pattern in Java, utilizing ORMLite for efficient data management. Contributed to migrating the codebase from Java to Kotlin, improving maintainability and aligning with modern development practices. Integrated RESTful APIs to synchronize real-time vehicle data, enhancing accuracy and enabling seamless communication between fleet devices and centralized monitoring systems.