Cross-Platform Social Networking App Development

I'm in need of an experienced mobile app developer to create a social networking app for both iOS and Android platforms. The app will incorporate core features such as user profiles and a messaging system.

Key Responsibilities:
- Design and develop a user-friendly interface
- Implement secure and efficient messaging system
- Create customizable user profiles
- Ensure cross-platform compatibility and smooth functionality

Ideal Skills:
- Proven experience in mobile app development, particularly social networking apps
- Expertise in both iOS and Android platforms
- Strong knowledge in UI/UX design
- Proficiency in implementing secure messaging systems
- Ability to create interactive user profiles

Please include examples of previous work in your proposal.