We use the FreeRTOS operating system in the Unattended POS device we developed. We use TI MCU, Smart Card Reader and Contactless card reader. We read VISA, MasterCard, Amex and Discover cards according to EMV standards. Some of these cards cannot read card data, data types are overloaded. We are looking for an Embedded System Developer to analyze them and fix bugs.
Preferably, EMV Kernel and EMV card reading processes should be developed.
We are planning long-term work. We will not consider those who do not write "61" at the beginning of your application.