Cross-Platform Video Streaming App

I need an experienced developer to create a video streaming application for professional content. The app must be available on iOS, Android, and Web platforms.

Key Requirements:
- Support for both live and on-demand video streaming.
- High-quality video playback and minimal buffering.
- User-friendly interface and seamless navigation.
- Secure user authentication and account management.
- Option to monetize content through subscriptions or pay-per-view.

Ideal Skills and Experience:
- Proven experience in developing video streaming applications.
- Strong knowledge of video processing and delivery.
- Expertise in mobile and web app development.
- Familiarity with UI/UX design principles.
- Experience with secure payment integration.

Please share your portfolio and relevant experience.