Cross-Platform E-commerce App Development

I need a skilled app and web developer to create an e-commerce application. The app should be available on iOS, Android, and Web platforms.

Key Features:
- User-friendly interface
- Secure payment gateway integration
- Product search and filter options
- Profile creation for users
- News feed for updates and promotions
- Messaging feature for buyer-seller communication

Ideal Skills and Experience:
- Proven experience in developing cross-platform apps
- Strong knowledge of e-commerce functionalities
- Expertise in UI/UX design
- Familiarity with secure payment systems
- Excellent communication skills for ongoing collaboration

Please provide samples of previous work in your bids.