Develop Android Based POS Application with WEB-Based Back Office

We require an Android-based POS Application with WEB-based Back Office and Android-based Owner Reports: Functional Requirement Back Office: 1. Users can manage capital & debt 2. Users can manage expenses 3. Users can manage assets 4. Users can manage inventory 5. Users can manage customers 6. Users can manage outlets / branches 7. Manage users 8. User can manage product / goods 9. Provide Sales reports, income summary, Balance Sheet, and Cash Flow. 10. etc. Functional Requirement POS: 1. The cashier can make the sales process 2. The cashier can see the sales activity that has been done 3. Cashiers can check stock 4. When the cashier perform refund must be verified authorization owner 5. Cashier can input cash / card / invoice payment 6. Cashier can do split printing (ex: to cashier / kitchen) 7. The cashier can add customers during the sales process 8. Cashier can do multiple orders 9. Cashier can choose modifier for each goods / product 10. The cashier can input Expense / Income 11. When starting the session / closing session cashier must input the total cash available 12. At the end of the session, the system will calculate the difference between sales and actual cash data 13. Applications can be connected to a cashier drawer, printer, and barcode scanner 13. etc. Non Functional Requirement: 1. Opereational Requirement 1.1 POS Using Android Platform (Android Studio) 1.2 Back Office Using WEB Platform (Laravel) 1.3 Owner Reports Using Android Platform (Android Studio) 1.3 The system should be able to accommodate import / export files to / from DB 1.4 System can accommodate periodic backups 1.5 Development using the provided repository 1.6 A progress report using Trello 2. Performance Requirement 2.1 Response times less than 7 seconds 2.2 The database must update in real time 3. High system security 4. Application Documentation (Sequence Diagram, Class Diagram, Data Model) 5. User Manual 6. User acceptance testing (UAT testing) 7. etc.