Full Stack Developer for Web Application. Python in backend and React.js in frontend

I'm seeking a seasoned full stack developer with a strong background in Python, to help me build a new web application.

Key Responsibilities:
- The project at hand is specifically about designing and developing a web application.
- It needs to have user authentication - to ensure a secure user experience.
- Real-time data processing is also a core functionality in the application.

I'm looking for a professional who can:
- Translate business requirements into technical specifications.
- Develop the web application with an eye on security and performance.
- Implement user authentication and real-time data processing.
- Suggest and implement best practices for the web application's scalability and maintainability.

The ideal candidate would have:
- Proven experience in full stack development with a focus on Python.
- Strong expertise in developing web applications.
- Previous projects with user authentication and real-time data processing.
- Ability to communicate effectively and provide regular updates on project progress.