Advanced Excel Billing System

I am seeking a skilled Excel expert to create a detailed billing spreadsheet for my business. This project is crucial to streamlining my operations.

Main Features:
- Automatic calculations
- Invoice generation
- Customer database creation

Invoice generation:
The spreadsheet will need to automatically generate invoices with explicit details such as:
- Customer details (Specifically, customer name)
- Item details
- Office Information

Skills and Experience:
A successful bidder will have demonstrated experience in:
- Advanced Excel
- Creating complex spreadsheets
- Accounting or financial background would be advantageous

If you've successfully completed a similar project in the past, your application will be particularly compelling. Looking forward to your proposals!