E-commerce App Development

I'm looking for an experienced app developer to create a basic e-commerce mobile app for both iOS and Android platforms.

Requirements:
- User-friendly interface
- Secure payment integration
- Product search and filter options
- User reviews and ratings section
- Order tracking feature

Ideal Skills and Experience:
- Proven experience in mobile app development
- Strong knowledge of e-commerce functionalities
- Familiarity with both iOS and Android platforms
- UI/UX design skills
- Experience with secure payment gateways

Please provide your portfolio and estimated timeline. Looking forward to your bids!