Secure Razorpay Payment Integration -- 2

I already have Razorpay running on both my website checkout and our companion mobile app, but recent red-flags have made me rethink the way we handle customer data. I need someone who knows the Razorpay APIs, webhooks, and their security add-ons inside-out to harden the entire flow... (Budget: ₹12500 - ₹37500 INR, Jobs: API, Linux, MySQL, Payment Gateway Integration, PHP, Security Auditing, Web Development, Web Security)