E-commerce App Development

I need a skilled developer to create a new e-commerce application.

Key Platforms:
- The application should be compatible with iOS, Android, and Web.

Essential Features:
- The app must include user authentication and profiles.

Ideal Skills and Experience:
- Proficient in e-commerce app development.
- Strong knowledge of iOS, Android, and Web development.
- Experience in implementing user authentication systems.
- Understanding of e-commerce specific features and user experience design.