I would like to hire an Arduino Engineer

Hi! Can do that for you. Both with ethernet and wi-fi. I need link or description of API. Let's discuss your needs in chat.

I can build both the Web API and Arduino MEGA coding to work with Web API to control the push button switch action. I have build lots of Arduino project which reads sensor data and sends to the web server. Have more than 15 years of experience on Digital Electronics and Micro-controller.

Good day! I am interested in working on your project. Please contact me so that we can discuss the details of your project. Look forward to your answer. Best regards.

i developed many projects based on arduino... kindly contact me for more information. i will do your work

Hello If you mean sending a data from Arduino(Board&Circuit) to and API , this can be done as follows 1-ESP8266 connected to Arduino OR more conveniently a Nodemcu board 2-Connection to the Router through the ESP8266 protocol(STA_Mode) and from there it's just a matter of software to send a Json message . If you mean the opposite , I.e you want to send from the Internet and it reaches your Arduino/other Dev Board .. You'll need a static IP For your router . Kind Regards

I have fairly good experience with arduino ide environment and have done some IoT related projects using esp boards