Modernize App's User Interface / organize file / make clickable prototype $250

I'm looking for a skilled UI designer to enhance the interface of my app. The primary goal is to give it a more contemporary look. The specific elements to be modernized include the navigation menu.

Ideal Skills:
- Proficient in UI/UX design
- Experience with modern design trends
- Strong understanding of navigation design

Please provide examples of your previous UI design work, particularly any app interfaces you've modernized in the past.