E-commerce Website and Android App Development

I need a comprehensive e-commerce website and an Android app for my physical goods business.

Core Functionalities:
- Product catalog and search
- Shopping cart and checkout
- User accounts and profiles

Ideal Skills and Experience:
- Proven experience in e-commerce website development
- Expertise in Android app development
- Strong UI/UX design skills
- Familiarity with secure payment gateways
- Ability to integrate user-friendly navigation and search features

I am a small startup. Our business name is Picapack. We do home and kitchen products and gadgets, household products. I just started a year ago. Before, I used the Swipe Billing app free version. Now I need a website and app (web to app type, like HDFC My Cards app) for my e-commerce business.
I need to include the catalogue and billing. My customer needs to log in with their mobile number. Select products in a category-wise manner. Add to cart. Make the payment. Checkout. The invoice is sent to the customer via WhatsApp and mail, and a text message is received at the customer number.

In backend
I need to add my products with images and specifications.

Please provide a portfolio showcasing similar projects.