ReactJS & Spring Boot Stack Developer Needed

I am seeking a seasoned full-stack developer with expertise in ReactJS and Spring Boot. The primary focus of this project is to address performance issues in my application.

Key Requirements:
- Proficient in ReactJS and Spring Boot
- Capable of addressing and resolving application performance issues

The project will involve:
- Implementing user authentication
- Setting up data manipulation (CRUD operations) functionality
- Identifying and resolving performance issues in the application

Ideal Skills and Experience:
- Proven experience in full-stack development with ReactJS and Spring Boot
- Strong problem-solving skills, particularly in resolving application performance issues
- Familiarity with integrating user authentication and CRUD operations

Please note, the primary objective of this project is to address the performance issues in the application. Hence, the candidate should be well-versed in profiling, debugging, and optimizing the application's performance.

Looking forward to working with a skilled and experienced developer who can help me address this critical issue.