Stock Trading App Development

I'm looking for an experienced app developer to create a stock trading application. The app should include:

- Real-time market data
- Portfolio management
- In-app trading

User authentication should be via biometric methods, like fingerprint recognition.

Ideal Skills & Experience:
- Experience in developing trading applications
- Knowledge of real-time data integration
- Strong background in portfolio management tools
- Expertise in biometric authentication technologies
- Familiarity with stock market operations and user interface design

Please provide a portfolio showcasing similar projects.