Desktop & Mobile UI Development

I'm seeking a proficient UI developer to design a modern and intuitive UI for my desktop and mobile app.

Key Project Details:
- Type: I need the UI developed for both desktop and mobile applications.
- Goal: The primary objective of the desktpp and mobile UI is to enhance user experience and engagement.
- Design: I'm looking for a completely new design. There are no existing UI elements.

The ideal candidate should:
- Have experience in UI development for both desktop and mobile apps.
- Demonstrate a strong portfolio of modern, user-friendly designs.
- Be able to understand and implement design elements to enhance user engagement.
- Be competent in creating completely new UI designs from scratch.

Follow the below process,

Design all the screens in Figma, and once the design is approved, then code it in html
Set all screens in 3 roles: Admin, Operator, Viewer

Deliverables
Figma file
Zip of HTML code for frontend, no backend integration is required but must work with electrical engineers to ensure that the project works with backend.

Please include relevant samples of your work in your application. A keen eye for detail and a strong understanding of user experience principles are essential.