UI Enhancement and Dark Mode Integration

I need an experienced UI/UX designer to modify my existing UI. The main goal of this project is to add a 'Dark Mode' feature. This modification should also improve the overall usability of the interface, with a specific focus on:

- Navigation ease: Streamlining the navigation to make it more intuitive.
- Readability: Enhancing the text and visual elements for better readability.
- User interaction: Making the interface more interactive and engaging for users.

Ideal candidates should have a strong background in UI/UX design, with a proven track record of implementing new features and improving usability. Experience with integrating 'Dark Mode' into UI is highly desirable. Please provide examples of previous projects that align with these requirements.