Data Aggregation Web Application Development

I'm looking for a skilled developer who can create a web application that can read data from multiple sources like Excel files, XML files, and APIs, and then match, aggregate, and save this data to a database.

Requirements:
- The web app should be able to read data from Excel files, XML files, and APIs.
- The application should have the capability to match and aggregate data from these different sources based on specific fields, data types, and unique identifiers.
- The end goal of the data matching and aggregation is to save the data into a database.

Ideal candidate should:
- Have experience in developing web applications that work with various data sources
- Be proficient in database management and data aggregation techniques
- Be able to write clean and maintainable code
- Have good communication skills to ensure a smooth project development and delivery.