Husam Fath

Built high-throughput webhook receiver using Django and Celery to process real-time events from Meta Graph APIs; achieved sub-250ms 200 OK responses by offloading ingestion. Refactored data structures with Clean Architecture and domain entities to isolate API payloads. Integrated OpenAI GPT models and Meta APIs to build automated, campaign-driven messaging bots; implemented Svix-based webhooks and event-driven architecture with Kombu and RabbitMQ. Developed Flutter mobile app with BLoC, GetIt, and offline Hive caching; Next.js 16 landing page with Tailwind CSS v4; containerized services (Docker, NGINX, PostgreSQL).

Flutter mobile app development; Next.js landing page; Django 6.0 API backend; implemented AI-driven quiz generation pipelines with spaced-repetition logic and topic analytics. Integrated Adapty webhooks with Celery orchestration; Dockerized Postgres environment; managed multi-service orchestration in a single YAML for deployment.

Sole developer for multiple production mobile applications published on Google Play under the organization’s developer account (MSF-HoR). Led end-to-end mobile development covering architecture, feature implementation, UI/UX, versioning, and Google Play store management. Implemented Flutter clean architecture using BLoC for improved maintainability and scalability across projects. Integrated Firebase (Auth, Firestore, FCM), RevenueCat/Adapty for in-app subscriptions, and Google OAuth for social login. Refreshed visual identity (icons, splash screens, branding) and managed Google Play policies, ASO keyword strategy, and store listing optimization.