Rehmat Ullah

Designed modular, testable architectures (Clean Architecture, MVVM, MVI) for apps with 10k+ users.
Led migration from legacy codebases to Flutter 3.0+, leveraging null safety and Dart 3 features
(records, patterns). Prototyped AI/ML integrations (TensorFlow Lite, Firebase ML Kit) for features like
image recognition. Collaborated with product teams to define roadmaps, prioritize tech debt, and
align with OKRs/KPIs. Reduced app memory usage by 40% using profiling tools and native interop
(Platform Channels, FFI).
Well Experience in google ads integration in apps.
Implemented In app purchases with apple store and google play console.

Expertly managed app state using GetX, Provider, and Bloc, optimizing performance for complex
workflows.
Implemented real-time features using Firebase (Firestore, Auth, Cloud Functions, FCM) and
GraphQL for efficient data fetching.
Optimized app size by 25% using code obfuscation (R8), asset compression, and tree-shaking.
Practiced Agile/Scrum methodologies, collaborating with designers and QA teams using
Jira/ClickUp.
Wrote clean, maintainable code following SOLID principles and TDD/BDD with
unit/widget/integration tests (Mockito, BlocTest).

Built scalable, cross-platform apps using Flutter framework, implementing responsive UIs with
adaptive layouts for mobile, tablet, and desktop.
Integrated RESTful APIs with Dio/Retrofit, handling error states, pagination, and token
authentication.
Worked with local databases (SQLite, Hive) for offline-first app experiences.
Basic CI/CD pipeline setup with GitHub Actions or Codemagic.