Affordable Mobile App Developer Needed

I'm looking for an experienced and budget-friendly developer to help with a mobile app on both iOS and Android platforms. The app requires:

- Identifying and correcting bugs
- Integrating blockchain technology
- Enabling cross payments with crypto and fiat currencies
- QR code functionality and workings with crypto payment technology

Ideal skills and experience:
- Proven mobile app development experience
- Strong familiarity with blockchain and cryptocurrency
- Experience in handling cross-platform payment integrations
- Problem-solving skills for bug identification and resolution

Please provide examples of similar work done and ensure you have a solid understanding of cryptocurrency operations.