React/Next.js Frontend Developer Needed

I'm seeking a skilled React/Next.js UI frontend developer for a monthly salary position. The developer will primarily work on a web application.

Key features of the application include:
- User authentication
- Real-time updates
- Data visualization

Ideal skills and experience:
- Proficiency in React and Next.js
- Strong understanding of user authentication mechanisms
- Experience with real-time data handling (e.g., WebSockets)
- Expertise in data visualization libraries (e.g., D3.js, Chart.js)
- UI/UX design experience is a plus

Please provide a portfolio showcasing relevant work.