MERN Stack App Revamp

I'm looking to improve my existing MERN stack application. The project involves:

- UI/UX Redesign: The current design needs a modern touch.

- Performance Optimization: Speed and efficiency are crucial.

- Adding New Features: Looking to implement multiple functionalities like user authentication, real-time notifications, and payment integration.

Ideal Skills and Experience:
- Proficiency in MERN stack
- Expertise in UI/UX design
- Experience in app performance optimization
- Knowledge of user authentication, real-time notifications, and payment integration