○ Introduced and implemented TDD, code quality, and project structuring practices, leading to improved collaboration and quality for both iOS and Android.○ Reduced Bluetooth connection dropouts by 10% by optimizing communication strategy for our IoT device, specifically for Chinese devices and major brands like Samsung, LG, and Google.

○ Built core features like barcode scanning and custom blockchain communication, and implemented backend data exchange.○ Boosted code quality with unit and E2E tests, increasing coverage by 50% using Kaspresso for thorough testing.○ Modularized the app architecture from one module to 30, enhancing scalability and maintainability.○ Integrated a YOLOv5 machine learning model, boosting the core app feature performance by 30%.

○ Enabled a scalable, high-performing KIOSK system that enhances reliability and supports future growth.○ Migrated main KIOSK feature from C++ to Java/Kotlin.

○ Implemented caching for faster data retrieval and optimized background processes for efficient battery usage.○ Designed the app to use Bluetooth Low Energy (BLE) to connect with wearables.