E-commerce Android App Development

I'm in need of an experienced Android app developer to create a robust E-commerce application. The app should have an integrated payment gateway and product search and filtering capabilities. User authentication is a crucial aspect of this project, so the developer must be proficient in implementing secure and user-friendly login systems.

Key Features:
- Payment gateway integration: The app should have a secure and reliable payment system.
- Product search and filtering: Users should be able to easily navigate and find products of their interest.
- User Authentication: The app will require a secure login system for users.

Ideal Skills:
- Proficiency in Android app development
- Experience with E-commerce app development
- Knowledge of integrating payment gateways
- Expertise in implementing user authentication systems

Please only bid if you have relevant experience and can provide examples of similar projects you've completed.