E-commerce Web App Development -- 2

I need a skilled developer to create an e-commerce web application that is optimized for both desktop and mobile platforms.

Core features should include:
- Task management
- Time tracking
- Booking functionalities

Ideal candidates should have:
- Experience in building e-commerce applications
- Strong UI/UX design skills for both desktop and mobile
- Proficiency in task management and time tracking integrations
- Familiarity with booking systems and their implementation

Please provide a portfolio showcasing similar projects.