Java Agent for Method Calls Instrumentation

I'm in need of a specialist in Java programming to ensure the Java Agent in my program runs after startup for the purpose of method calls instrumentation. This function is crucial to my program as it significantly impacts performance enhancement.

Your responsibilities would include, but are not limited to:
- Expertise in Java
- Familiarity with Java Agent and its diverse functions
- Knowledge and experience in bytecode modification and method call instrumentation

The ideal candidate would be someone who is skilled in Java programming, particularly with using the Java Agent for performance improvement. Experience in manipulating bytecode is also highly advantageous.



I want to replace a specific class in an independent jvm that is already running.
Since the existing class is hidden, I want to enter the starting point of the existing class with javaagent, etc. and replace it.