I will fix java backend bugs and concurrency issues

If your Java backend application is throwing runtime exceptions, freezing due to unmanaged threads, or failing to save data to files correctly, I can help you fix it.

I focus on diagnosing core runtime failures and fixing broken logic. I do not write bulk template code; instead, I analyze your specific system architecture to resolve the root cause of the bug.

What I focus on fixing:

Concurrency & Multithreading: Managing thread pools, eliminating deadlocks, resolving synchronization bugs, and fixing concurrent exceptions.

Data Persistence & Serialization: Troubleshooting object streams, handling file input/output errors, and ensuring safe local data saving.

Code Restructuring: Cleaning up tightly coupled, messy code blocks into modular, clean components based on SOLID design principles.

How we work together:

1. You share the exact error log/stack trace and the relevant section of your codebase (or provide repository access via Git).

2. I isolate the fault, trace the logic states, and implement a stable, clean fix.

3. I provide clean, commented updates or push directly to your branch.

Please message me with your error log before placing an order so we can confirm the scope