Node.js Application Update with UI and Swagger

I'm seeking an experienced developer to help update my existing Node.js application. The application has a UI that requires user authentication and data visualization components. A significant part of this project will involve visualizing data on maps.

Key Tasks:
- Updating the Node.js application with new features and improvements
- Enhancing the UI to support user authentication
- Implementing data visualization components, particularly focusing on maps
- Ensuring the application is well integrated with the provided API Swagger file

Ideal Skills:
- Proficiency in Node.js
- Experience with UI development, particularly for user authentication and data visualization
- Familiarity with working on map visualizations
- Knowledge of Swagger for API integration
- Prior experience updating existing applications, rather than building new ones from scratch.