Need to update the old website

I'm in need of an expert who can help me upgrade my old application. The design is completed.

Ideal Skills:
- Proficiency in a variety of platforms and technologies.
- Strong problem-solving skills to assess and implement necessary upgrades.
- Excellent communication skills to discuss potential improvements.

Experience:
- Prior experience with upgrading legacy applications.
- Proven track record of enhancing application performance and user experience.

Details:
https://docs.google.com/document/d/1XhAlgK0Qh0JLKBgDentdJxehW3L7Kcl613LKpbB-aZg/edit?tab=t.0