Upload PoS System to Live Website

We need a developer to upload a newly integrated PoS system to our live website. The work includes deploying the updated system, verifying that all features function correctly, and ensuring a smooth transition without disrupting existing site operations. You should be comfortable handling the deployment process, testing the system after launch, and resolving any issues that arise. Please share relevant experience with similar website updates and your approach to ensuring a reliable rollout. More specifically: - Safely merge the POS into the live site without overwriting the existing booking/payment configuration - Run the POS database migration on the existing D1 - Deploy the updated Worker with the POS API routes - Put the till live at (ourwebsite)/pos/ - Basic UAT: staff login, test sale, admin/reporting, and combined revenue with paid bookings