Cross-Platform E-commerce App Development

I'm looking to develop a mobile e-commerce application for both iOS and Android platforms.

Key Requirements:
- User-friendly interface
- Secure payment integration
- Product search and filter options
- User account management (login, profile, order history)
- Review and rating system
- Push notifications for offers and updates

Ideal Skills and Experience:
- Proven experience in developing cross-platform mobile apps
- Strong knowledge of e-commerce functionalities
- Expertise in UI/UX design
- Familiarity with secure payment gateways
- Ability to implement push notifications

Looking for a developer who can deliver a high-quality product within budget. Please provide examples of previous work.