Electron.js Desktop Application Development

I'm seeking an experienced developer to create a desktop application using Electron.js. This app will synchronize with my already developed web and mobile applications, which are built with React.js and React Native. The desktop app needs to be compatible with Windows and macOS.

Key Requirements:
- Proficient in Electron.js, with prior experience in desktop application development
- Capable of implementing user authentication and profile management features
- Familiar with data synchronization processes between different platforms
- Understanding of React.js and React Native to ensure seamless integration with existing applications

Ideal Skills:
- Cross-platform desktop application development
- User authentication systems
- Data synchronization techniques
- Familiarity with React.js and React Native

Please, only bid if you can demonstrate relevant experience and can deliver a high-quality product.