E-commerce Mobile App Development

I need a skilled mobile application developer to create an E-commerce app that runs on both iOS and Android platforms.

Key Features:
- User-friendly interface for easy navigation
- Secure payment gateway integration
- Real-time inventory updates
- Customer review and rating system
- Push notifications for offers and updates

Ideal Skills:
- Cross-platform mobile app development
- Experience in building E-commerce applications
- Proficiency in integrating secure payment systems
- UI/UX design understanding

I am looking for a professional who can deliver a high-quality application on time. Please include examples of your previous work in your proposal.