Grocery Store App Development

I'm looking for an experienced mobile app developer to create an online shopping application for a large grocery store on the Android platform.

Essential Features:
- Payment Integration
- Product Search and Filtering
- Shopping Cart and Checkout

Ideal Skills and Experience:
- Proven experience in developing Android e-commerce applications.
- Strong skills in payment gateway integration.
- Expertise in implementing robust search and filtering functionalities.
- User-friendly UI/UX design experience.
- Strong problem-solving skills and attention to detail.

Please include a portfolio of similar work. Looking forward to your bids!