Mobile Phone Selling Platform Development

I'm seeking an experienced web developer to create a website focused on selling old mobile phones, similar to Cashify.

Key Requirements:
- Primary Function: The website should primarily facilitate the selling of old mobile phones.
- User Authentication: Implementation of Phone Number OTP for secure logins.
- Essential Features:
- Instant Price Quotation: Users should receive immediate price estimates for their devices.
- Pickup Scheduling: Users can schedule pickups for sold devices at their convenience.

Ideal Skills & Experience:
- Strong background in web development, particularly in building e-commerce or similar transaction-based platforms.
- Experience with secure authentication methods, especially Phone Number OTP.
- Proven ability to integrate real-time price quotation tools and scheduling systems.

Please provide a portfolio showcasing relevant projects. Looking forward to your proposals!