USA Portal Appointment Scheduler -- 2

I need a production-ready software extension that plugs into a leading U.S. web portal and lets authenticated users reserve time slots. The core feature is secure appointment booking—but I expect polished functionality such as user login, calendar view, slot validation with internal rules, and clean confirmation pages. Requirements include inheriting and refactoring partial work from a previous developer. The preferred candidate must have proven experience in creating login-protected appointment tools specific to U.S. portals (demo or code sample required). Tech Stack: Flexible, as long as code is clean, well-documented with simple deployment. Final Deliverable: Extension running efficiently on the target portal with brief hand-off training for managing slot parameters.

Project ID: 40603939