Hello
I am an IoT developer and I have developed the arduino devices. I have developed the I2C, RS485 and NFC reader. For this project, I can use the ESP32, max485 module and NFC Reader module. The ESP32 has wifi feature so I think it is proper for this project. And I can develop the code in Arduino IDE or PlatformIO.
Please contact me, I can start working immediately. I hope we can discuss more details via a private chatting. I am looking forward to your response.
Thank you