Need .Net MAUI based mobile application for Patient Invoice Generate,Appointment and more

I am looking for an experienced .NET developer to build a mobile application that uses .NET Core(MAUI) to generate patient invoices, arrange appointments, and report download. A QR-Code will generate against the Patient Invoice and when patient will go to care center will scan the QR-Code and will be authenticated for test sample provide. The application should use API connectivity for user authentication and get data from current database and must be published in both the App Store and Play Store. The applicant should have extensive experience in .Net MAUI development and have a portfolio of successful apps to show. The ideal candidate should be able to offer long-term support after the completion of the project and have a willingness to answer any questions I have throughout the process.