Python Web Service for Excel Calculations

I'm looking for a Python developer to create a web service that handles calculations using Excel and Google Sheets. The service will accept inputs, perform the calculation in the specified sheet, and return outputs.

Key Requirements:
- The service should be built using Python
- Previous experience in similar projects is highly preferred
- Familiarity with working with JSON data and tables
- Proficiency in Excel and Google Sheets is a plus

Please include your prior experience in your application; the more relevant experience you have, the better.

Ideal Skills:
- Python
- Excel and Google Sheets
- JSON data manipulation
- Web service development
- API key authentication