Cross-Platform Gambling App Development

I'm seeking an experienced app developer to create a cross-platform gambling application. The app should be engaging, secure, and user-friendly.

Key Requirements:
- Cross-platform compatibility (iOS and Android)
- Secure payment processing
- User authentication and data security
- Intuitive UI/UX design

Ideal Skills:
- Proven experience in developing gambling or betting apps
- Strong knowledge of security protocols
- Expertise in UI/UX design
- Familiarity with payment gateways

Please provide a portfolio with relevant projects.