I’m replacing Razorpay with PayU on my existing Laravel-based service-booking platform. You’ll receive full sandbox and production credentials along with the current Razorpay controller, routes, JS, and blade views so you can see exactly how things work today and mirror that experience. Scope of work • Build a clean, modular PayU implementation that plugs into the same pricing logic, order tables, and user flows already in place. • Handle signature generation, secure server-side verification, and all success, failure, and cancel callbacks. • Update the order/service records on every payment status change. • Surface clear, concise messages to users when a payment succeeds, fails, or is cancelled. • Demonstrate flawless transactions in the sandbox first, then flip the switch to live. I’ll supply any project documentation or coding-style guidelines you need, so just follow them and keep your code organised enough that a future gateway swap will be painless. A short README covering setup, environment variables, and deployment steps for staging and production will round things off. Show me a working demo link or a short screen-share once the sandbox flow is solid, and we can move straight to production credentials.