Ergonomic iPhone Slider Keyboard Case Design

I'm seeking a designer to create a slider keyboard case for an iPhone 13 Pro Max that integrates a mini keyboard. The design must prioritize ergonomics and usability, ensuring comfortable and efficient use.

Key Features:
- Backlit keys for low-light usage
- Shortcut keys access for enhanced productivity
- Adjustable angle for customizable viewing and typing
-Mag safe connection if possible
-Bluetooth connectivity

Ideal skills and experience:
- Expertise in ergonomic product design
- Proficiency in designing for mobile accessories
- Strong understanding of user interface and experience

Please provide a portfolio showcasing relevant design work.