ESP32 get Frequences array from MEMS microphone via I2S

I am looking for a freelancer to develop a sketch. This project requires the use of I2S as the connection, and will involve getting a frequency array from a MEMS microphone(One reading per ESP32 wakeup). The successful freelancer for this project will have experience in working with electronics, and programming for the ESP32 microcontroller. Experience in developing prototypes for audio and sound related projects is a plus.

I have a solution for analog microphone, but mems microphone is mandatory and i have no idea how to read data from and push data to arduinoFFT library.