They were rude in their responses and the whole process was a sham. and an unfair one. I was asked to write a solution for a challenge I had done a couple of times successfully, but this time it was just unfair because I couldn't test my solution prior to submission due to lack of tools in their online IDE for running the code. They clearly care about the wrong set of things when interviewing candidates. From having a couple of conversations with them, I can indefinitely say that you should not work for them, they have a terrible attitude, they are toxic people.

I had a test task and after than I had interview with engineer. It was interesting and professional. I didn’t receive an offer, but I was good experience to talk with the employees