UI/UX Designer for Cross-Platform Mobile App

I'm seeking a talented UI/UX designer to redesign my mobile app aimed at boosting user engagement. The app needs to be designed for both iOS and Android platforms, with an emphasis on creating an intuitive and engaging user experience.

Key Requirements:
- Proven experience in mobile app design, specifically for both iOS and Android.
- Strong portfolio showcasing previous UI/UX design work, particularly for apps focused on increasing user interaction.
- Ability to understand and design around the app's main goal of increasing user engagement.

Skills:
- Proficiency in design software like Sketch, Adobe XD, Figma, etc.
- Excellent understanding of user-centered design principles.
- Strong communication skills to convey design ideas effectively.