Cross-Platform Social Media App Development

I need a skilled developer to create a social media app for iOS and Android platforms. The app should include:

- User Profiles
- News Feed
- Messaging System

Content Types:
- Text Posts
- Photos and Videos
- Links to Other Content

Ideal Skills and Experience:
- Proven experience in mobile app development.
- Strong expertise in building social media platforms.
- Proficient in UI/UX design for a seamless user experience.
- Experience with back-end development to support dynamic content.

Please provide examples of similar work and estimate the timeline for project completion.