Build a Custom React Application

I'm looking for a skilled React developer to build a custom application. The primary purpose of this application is for personal use and not aimed at a large public audience.

Key features:
- User authentication: This application will require secure logins and user management.
- Custom features: I have specific functionalities in mind that will need to be implemented.

Ideal skills and experience:
- Proficiency in React and JavaScript
- Experience with building secure, user-authenticated applications
- Strong problem-solving skills and ability to understand and implement custom features.

Note: Please be ready to discuss and brainstorm these custom features with me.