Crowdfunding Platform Development

I'm looking for an experienced software developer to create a fully functional crowdfunding platform from the ground up. This project includes:

- Responsive Website and Mobile App (iOS and Android preferred)
- Modern Design
- Robust Backend Infrastructure
- Secure Payment Integration
- User-Friendly Interface

Ideal skills and experience:
- Proven track record in building crowdfunding platforms or similar
- Expertise in mobile and web app development
- Strong knowledge of secure payment systems
- Experience with UI/UX design
- Solid backend development skills

Please provide examples of your previous work.