hello sir, how are you. I read your proposal and i am interested in this project. I have much experience on IOT projects but it will be my first time to add payment gateway.
Let us discuss more.
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I am an Embedded engineer (STM32, PIC, AVR, Arduino, SOC BLE (bluetooth) chips, ZigBee, WiFi, GPS, LED, LCD display etc.) and PCB designer (Altium, KiCad, Orcad), 3D Modeling.
You can check my profile for more information. I can do this project as per your requirement.
I hope you will consider me for this project.
thanks with regards
Preetpal Singh