Fintech App Development Expert Needed

I need an experienced fintech app developer who has previously crafted fintech applications.

This project will entail building an app across three platforms - iOS, Android, and Web. The key features of the app should include:

- Account Management
- Payment Processing
- Financial Analytics

Security is paramount for this project, with advanced encryption being a non-negotiable requirement.

Ideal candidates should show:
- Proven track record in fintech app development
- Robust knowledge of secure software development
- Proficiency in mobile and web-based platforms
- Previous work with advanced encryption