Cross-Platform Parcel Delivery App Development

I need a skilled developer to create a parcel delivery application for iOS and Android platforms. The app should cater to both customers and delivery drivers.

Core functionalities include:
- Real-time tracking of parcels
- In-app payment system

Ideal skills and experience:
- Expertise in mobile app development for both iOS and Android
- Experience with real-time tracking and secure payment integration
- Strong UI/UX design skills to ensure a seamless user experience
- Previous experience with delivery or logistics applications is a plus