Cross-Platform Desktop App Development with Electron JS

I am looking for an experienced Electron JS developer to help me create a cross-platform desktop application. This app needs to support Windows and macOS.

Key Features:
- The application must include robust data synchronization capabilities.

Ideal Skills:
- Extensive experience with Electron JS.
- Proficiency in developing cross-platform desktop applications.
- Strong understanding of data synchronization mechanisms.
- Experience with Windows and macOS platforms.

Please provide examples of relevant projects you've completed.