Car Dealership Backend Development

I need a skilled developer to create a robust backend for the AutoDeal HTML template.

Key requirements:
- User authentication and management
- Integration with payment gateways
- Admin dashboard for managing listings

The backend should be highly customizable, with the capability to build custom features as needed.

Ideal skills and experience:
- Strong proficiency in backend development
- Experience with user authentication and payment gateway integration
- Ability to create dynamic admin dashboards
- Familiar with various databases (MySQL, MongoDB, PostgreSQL)

Please provide examples of similar work done.