Mojtaba Shafaei

Freelance: Delivered custom Android apps - clean architecture, offline‑first, performance optimization, secure data handling, cross‑platform support. Personal project: Built full production stack - Android (Kotlin, Jetpack, Compose), REST APIs, SQL backend. Delivered auth, real‑time updates, offline storage + sync with modern patterns. Always up to date with latest Android, Compose and cloud integration trends.

+ Enhancement of real-time data updates and notifications with STOMP WebSocket protocol and OkHttp3. + Implementation of an MRZ passport scanner library with Google Camera2 and Google text-recognition. + Optimization of computational tasks and I/O operations using Coroutine. + Boost of app stability and QA efficiency with comprehensive tests using JUnit5, mockk, and turbine. + Integration of Google and Microsoft Single Sign-On (SSO) with OAuth 2.0.

+ Improvement of stability and reliability with Kotlin, MVVM, and RxJava2. + Redesign of UI based on Material Design principles with Lottie for animations. + Enhancement of app speed with advanced caching using the ObjectBox database.

+ Development of two applications from scratch using Java, MVP, Retrofit, and RxJava. + Enhancement of user accessibility by adding offline data functionality with Realm.