Expected duration: 1 - 2 weeks We're looking for an Android developer to build a version of our current UHF RFID application (written in C#) in Android using Java/Kotlin. Conversion of existing Windows C# RFID system to Android application, calling on Native serial RS232 ports on industrial Android board. 1. HARDWARE INTEGRATION - Reader (RS232) - Card Terminal (RS232) - Door Lock (RS232) - Thermal Probe (RS232) - QR Scanner (RS232) - + 3rd party Customer Credits system (REST API) 2. SOFTWARE BUSINESS LOGIC TRANSACTION 1. Reader records Inventory of Tags in cache (CurrentInventory) 2. System waits for Customer to Tap Card/Scan QR 3. System sends signal to Unlock Door, Start Transaction 4. System waits for Customer to Review Transaction, Scan Inventory of Tags (NewInventory) 5. Calculate (CurrentInventory)-(NewInventory) to display RESTOCK 1. Allow Restocker to log in 2. Display total tags inside system 3. MACHINE SETTINGS PAGE Device Settings + Test 4. LOGGING REQUIREMENTS Slack Alerts Logging to SD card: Device Level + Software events level 5. CLOUD MANAGEMENT SYSTEM INTEGRATION Link to existing Cloud Management system using REST API to sync the following: - Realtime Transactions - Error updates - Inventory Updates