Dot Net Core Web Application

I need a web application developed using Dot Net Core. The application should include a comprehensive workflow and various functionalities to ensure smooth operations.

Key Requirements:
- Develop a web application.
- Implement a complete workflow.
- Include user authentication, data management, and payment processing.
- Integrate an approval process and automated notifications.
- Enable payment processing and support for file upload and download.

Ideal Skills and Experience:
- Proficiency in Dot Net Core and MySql development.
- Experience in creating web applications with complex workflows.
- Strong understanding of user authentication and data management.
- Familiarity with payment processing integration.
- Ability to implement approval processes and automated notifications.