Sales Admin Dashboard & Backend

I need a clean, responsive admin dashboard focused on sales management, powered by a solid backend API. The core of the interface will be table- and list-based views that let me drill down into customer data quickly. Beyond listing customers, the app must let me add, edit, filter, and export customer records so I can keep our database accurate in real time.

Here’s what matters most:
• Smooth, modern UI (React, Vue, or similar) that loads fast and handles large data sets without lag.
• Secure backend (Node/Express, Django, or Laravel—your choice) with well-structured endpoints for all CRUD operations on customers.
• Authentication layer so only authorized staff can access the dashboard.
• Clear installation instructions plus a brief README explaining how to spin up both frontend and backend locally.

I’ll consider the job complete when I can:
1. Log in with a test account.
2. View, search, sort, and paginate customer tables.
3. Create, update, and delete a customer and see changes reflected instantly.
4. Export selected customers to CSV or Excel.

If you can deliver concise, maintainable code and a polished UI, I’m ready to get started right away.