Ecommerce developer for Build and Design Website immediately

Want to start immediately and already funded the project. Project requirements & budget in the attachments, I will not check any proposal without answering the questions in the attached requirements. I will not accept ay copy paste proposal without answering all attached requirements. We are looking for an experienced PHP developer to audit and secure our custom-built website, including its cart and checkout system. The goal is to identify and resolve security vulnerabilities while ensuring the platform follows modern security standards, best practices, and performance requirements.