PCB and Gerber File Modifications

I need an experienced PCB designer to make some modifications to my PCB and Gerber files.

Requirements:
- Trace changes: The traces need to be altered to resolve a design issue.
- Layout Changes: This involves re-routing traces primarily.

Skills and Experience:
- Proficiency in PCB design software
- Experience with creating and modifying Gerber files
- Strong problem-solving skills to effectively resolve design issues
- Understands the importance of maintaining signal integrity during modifications