Modern Mobile UI/UX Design using Figma

I need an experienced mobile UI/UX Designer to create designs based on my design brief for a shift tracking app. The design should be modern and work on both iOS and Android platforms.

Requirements:
- Modern design aesthetic
- UI/UX for both iOS and Android
- Experience in shift tracking app design is a plus

Please include:
- Number of revisions
- Estimated time frame for completion

Ideal Skills and Experience:
- Proven UI/UX design portfolio
- Expertise in modern design principles
- Proficiency in design tools (e.g., Figma, Sketch, Adobe XD)
- Strong understanding of mobile design guidelines for iOS and Android

Looking forward to your proposals!