Implemented dependency injection using Dagger Hilt. Managed permissions and ensured compatibility across multiple Android versions (7 to 16). Configured and modified Bluetooth to filter specific devices and optimize connections. Integrated and consumed REST APIs using Retrofit, implementing robust error handling and networking flows. Developed under the MVVM architecture using Kotlin and Java. Integrated and maintained multiple SDKs within a single project. Performed minor modifications to a payment terminal SDK to meet business requirements. Developed functionalities for a payments application, including services, mobile top-ups, and card payments via NFC and swipe. Implemented and integrated Firebase Crashlytics for monitoring and resolving production issues. Added biometric authentication (fingerprint/face) for secure user access. Implemented payment via payment links and applied security measures such as encryption and anti-debug protections. Integrated CAPTCHA in Android for advanced validation and security. Integrated payment terminals using specialized vendor environments. Managed local data storage using Room and SharedPreferences. Built user interfaces using XML following established UI/UX guidelines.

Developed a mobile application using Angular 19, available as an APK on Android and as a PWA on both Android and iOS. Implemented differentiated views for users, workers, and administrators. Developed the back-end using Laravel, integrating functionalities such as push notifications and Stripe for payment processing.

Developed front-end applications for Android projects, enhancing user experience. Integrated APIs and technological solutions into applications. Implemented the MVVM design pattern and clean code principles. Utilized tools such as Retrofit, Room, and Gradle to optimize development. Participated in agile methodologies and collaborated with multidisciplinary teams.