Cross-Platform Food Delivery App Development

I'm seeking an experienced mobile app developer to create a food delivery application that will be available on both iOS and Android platforms.

Key requirements include:
- User-friendly interface for seamless navigation
- Secure payment gateway integration
- Robust backend support to manage orders, restaurants, and deliveries

Ideal candidates should have:
- Proven experience in developing mobile apps, especially in the food delivery or similar domain
- Strong knowledge of both iOS and Android development
- Expertise in UI/UX design
- Familiarity with secure payment systems

Please provide a portfolio showcasing relevant projects.