Cross-Platform Mobile App Development

I need a skilled app developer to create a mobile application from scratch for both iOS and Android platforms.

Key Requirements:
- Experience in developing for iOS and Android
- User authentication via two-factor authentication
- Data storage including:
- User profiles and settings
- Transaction history and financial data
- Multimedia files (images, videos)
- Clean, intuitive interface
- API integration

Ideal Skills and Experience:
- Strong portfolio of past app projects
- Expertise in user experience design
- Proficient in API integration and data security

If you meet these requirements, I'd love to hear from you!