Modern E-commerce App Development

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

Key Requirements:
- User account creation
- Payment integration

Ideal Skills and Experience:
- Proficiency in Android and iOS development
- Experience with e-commerce app features
- Strong design skills for a modern aesthetic
- Knowledge of secure payment integration methods
- Ability to deliver a user-friendly interface

Please provide samples of similar work done. Looking forward to your bids!