Business Expenses Management App and Web Management Portal

I'm looking for a developer to create an expenses management app primarily for business use. This app should be available on Android and the Web, with a range of key features including: - Receipt scanning with OCR - Expense categorization, and ability to set categories/edit/change - Report generation - Sync to Xero accounting software - Integration with the bank to manage payments - Export data to CSV for use in other platforms, with configurator - Multi-level approval hierarchy - Email notifications - Single sign-on with MS365 The ideal freelancer for this project should have extensive experience in developing mobile and web applications, particularly for expense management. Knowledge and experience with Xero and MS365 integration is highly desirable. The candidate should also be proficient in implementing features such as receipt scanning and expense categorization. Strong skills in creating user-friendly interfaces and ensuring seamless functionality across platforms will be key.