Professional ChatGPT Logo Enhancement

I need a skilled designer to improve the ChatGPT logo. The redesign should maintain the original color scheme but adopt a more professional look.

Key requirements:
- Original color scheme should be preserved.
- The overall style should be professional.

Ideal skills and experience:
- Strong background in logo design
- Experience with professional and minimalist design styles
- Ability to work within a limited budget
- Portfolio demonstrating similar past work

Please share your relevant experience and a link to your portfolio.