Java & React App Development

I'm looking for a skilled developer to build a complex custom front-end using React and a robust back-end with Java. The project involves:

Backend Development:
- Implementing user authentication to ensure secure access.
- Managing a database for storing user and application data.
- Integrating various APIs to enhance the app's functionality.

Frontend Development:
- Creating a custom and complex user interface that goes beyond a simple, minimalistic design.
- Incorporating real-time updates into the app to keep users informed instantaneously.
- Designing advanced search filters to help users navigate the app's content.
- Integrating drag and drop functionality for a more interactive user experience.

The ideal candidate should have extensive experience in both Java and React, with a strong portfolio of similar projects. They should be capable of creating a sophisticated, user-friendly interface and a secure, efficient back-end. Excellent communication skills are essential for understanding and implementing my vision for the app.