MySQL to MongoDB E-Commerce Migration

I'm seeking an expert to migrate my current MySQL e-commerce application into a MongoDB application. The project needs to be completed as soon as possible.

Key Requirements:
- Retain all existing features during migration. This includes user authentication, product catalog, and order processing.
- The current system is a custom-built online shopping platform using Xampp.
- No new features are needed, just a seamless transition to MongoDB.

Ideal Skills:
- Proficient in MySQL and MongoDB
- Experience with e-commerce application migration
- Knowledge of Xampp and custom-built platforms
- Ability to ensure a smooth transfer of all functionalities.