Modern Coded Website for BechMyPhone.com

I'm looking for a skilled developer to create a fully coded website for BechMyPhone.com using HTML, CSS, JavaScript, and PHP/MySQL. No WordPress or page builders.

Key Requirements:
- User Flow: Brand → Model → Condition → Instant Price Display
- WhatsApp Integration for Instant Phone Detail Submission
- Admin Panel: Update brands, models, conditions, and prices without coding knowledge
- Must be mobile-friendly, fast-loading, and secure
- Delivery within the agreed timeline

Ideal Skills:
- Proficiency in HTML, CSS, JavaScript, PHP, MySQL
- Experience in building modern, user-friendly interfaces
- Strong background in web security and optimization
- Previous work examples are a must

Please include past work in your application.