Investment Mobile App Development

I'm looking for a mobile app developer to create an investment app for both iOS and Android. The backend database codes are already written in Node.js and Python. The app will cater to investments in financial markets and will require redirect and redirect back functionality.

Key Features:
- Portfolio tracking: Users should be able to monitor their investments and see how their portfolios are performing.
- Market news and updates: The app will need to provide users with the latest news and updates from the financial markets.
- Transaction history: Users should be able to see their transaction history.
- The screens are already created in the web view and needs to be done for app

User Authentication:
- The app will require three methods of user authentication: Email and Password, Social Media Login, and Biometric Authentication.

Ideal Skills:
- Proficient in mobile app development for both iOS and Android.
- Experience with Node.js and Python.
- Knowledge in developing investment tracking apps.
- Familiarity with implementing various user authentication methods.

Please include previous examples of similar projects in your bid.