Cross-Platform Social Networking App

I'm looking to develop a cross-platform social networking application that supports iOS, Android, and Windows. The app should include essential social networking features such as user profiles, messaging, and content sharing.

Ideal Skills:
- Proficient in mobile and desktop app development
- Experience in creating social networking apps
- Expertise in implementing user profiles, messaging systems, and content sharing features
- Cross-platform development knowledge (iOS, Android, Windows)

Please provide examples of your previous work, particularly any relevant to social networking applications.