Brief phone interview, followed by asking me to build a .net core app for them to look at. They asked me to make a sample .net core app for them to review. I provided a working .net core to their specifications, complete with unit tests and offloading long-running processed to azure functions. They did not continue with the on site interview and provided completely hazy feedback. Disrespectful waste of my time, and idiotic to not even to talk to the developer about their code.