Fullstack Developer Needed: Spring Boot & React Fixes

I need a seasoned fullstack developer with extensive experience in Spring Boot, Java, and React to help fix my project. The specific issues aren't documented, so the developer will need to diagnose and resolve problems across the full stack.

Key requirements include:
- Proficiency in Java and Spring Boot
- Expertise in React for frontend issues
- Experience in diagnosing and fixing fullstack problems
- Ability to work without comprehensive existing documentation

Time is of the essence, so a prompt and efficient professional would be ideal.