I experienced in arduino and C++ Programming, and also high knowledge on electrical components charateristic. My current job now also as Embedded device developer both for software and hardware like arduino, esp32, raspberry (with python) and etc.
I can help your project to develop the RFID card security system with cheapest hardware solution.
With my price bid, I will provide you all of software and programming, assist you how embedd it to hardware, create infrastructure, and available to do conference call anytime with you during the project if necessary.