Cross-Platform Social Media App Developement

I'm seeking an experienced mobile app developer to create a social media app that works on both iOS and Android platforms.

Key requirements include:
- User Authentication: Sign up, log in, and profile management.
- Content Sharing: Post updates, photos, and videos.
- Interaction: Like, comment, and share.
- Messaging: Direct messaging between users.
- Notifications: Real-time alerts for interactions.
- Search and Discover: Find friends and trending content.

Ideal skills and experience:
- Proven experience in developing cross-platform mobile apps.
- Strong knowledge of social media app functionalities.
- Proficiency in backend development to support app features.
- Familiarity with UI/UX design principles for an engaging user experience.
- Experience with security protocols to protect user data.

Please share your portfolio and relevant experience. Looking forward to your proposals!