Key contributions:
- Built WebSocket real‑time chat for instant customer assistance.
- Designed Smart Restocking system using sales data to predict inventory needs.
- Implemented File Management with FastAPI + MinIO for scalable file storage.
- Auth & Authorization: secure API‑level JWT/OAuth2 integrations.
- Created flexible Custom Attribute Service to manage diverse object metadata across services.
- Integrated PostGIS for location features (nearby facilities, city detection).
- Used Redis to enable multilingual support and caching layers.
- Integrated RabbitMQ for smooth inter‑service communication; Celery for background tasks.
- Advanced MongoDB aggregation pipelines for complex analytics.
- Built a Telegram bot to manage channel interactions and website data sync.