Web-Based MVP Development for Stitch App

I'm looking for an experienced developer to turn my existing Stitch app prototype into a functional web-based MVP. The MVP should include:

Database Integration:
- Preferably Firebase

Drag-and-Drop Features:
- File Upload
- Reordering Items
- Custom Component Placement

Pricing Calculations:
- Variable rates based on inputs
- Discount calculations
- Dynamic pricing based on size, products, materials, labor, and upgrades

Functionalities:
- Project saving/editing
- PDF proposal generation

Ideal skills and experience:
- Proficiency in web app development
- Experience with Firebase
- Strong knowledge of implementing drag-and-drop features
- Proficient in complex pricing calculations and integrations
- Strong UI/UX design skills to ensure a user-friendly interface

Please share your portfolio and relevant experience.