Hello there.
I have read your job description carefully, you want to make a quick Arduino sketch.
You want to make a strip of ws2811 neopixels flash/flicker like an incandescent light bulb that is shorting out using the control of the Arduino.
You want to be able to adjust the brightness of the lights within the programming, this will be using the analog output function.
You want to program the white color only, this will be using all of the wires of the RGB to get the white.
I have experience in Arduino, Electronics, Embedded systems, and IoT. I can do this job.
Love to work on this project and know more if you would like, Thanks.
, Mahmoud.