UI Modernization for Existing System

I'm seeking a skilled developer to enhance our existing system with a focus on modernizing the user interface.

Key Development Requirements:
- CSS
- JavaScript
- HTML

Ideal Skills and Experience:
- Proficiency in CSS, JavaScript, and HTML
- Strong background in data analytics and dashboard development
- Familiarity with automated notification systems

Please provide your portfolios and relevant experience. Looking forward to your bids!