E-commerce App Development

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

Key Requirements:
- User account login/signup
- Payment gateway integration
- Push notifications

Ideal Skills and Experience:
- Proven experience in developing e-commerce apps
- Expertise in both iOS and Android platforms
- Strong knowledge of payment gateway integration
- Ability to implement push notifications

Looking for a detailed proposal including timeline and similar project references. Please ensure your bid aligns with my budget.