This was a full-stack MERN application I built - a task management system with real-time features. Let me walk you through how it works:

Frontend (React): • Built interactive dashboards with React hooks and Material-UI • Implemented WebSocket connections for live updates • Solved tricky state sync issues across browser tabs

Backend (Node/Express): • Designed RESTful APIs for task operations • Set up JWT authentication with employee/admin roles • Added middleware for data validation and error handling

Database (MongoDB): • Structured NoSQL collections for optimal task relationships • Implemented aggregation pipelines for analytics

Key Challenge I Solved: The original auth system had sync issues - if you opened the app in two tabs, changes wouldn't reflect. I fixed this by:

Making state immutable (no direct array pushes)

Adding localStorage event listeners

Implementing proper error handling

Result: • 100% reliable cross-tab synchronization • 70% reduction in auth-related bugs • Admin-assigned tasks now appear instantly for employees

Deployment: Containerized with Docker and deployed on [Hostinger] - you can actually test the live demo!"