Got invited to an initial background screening for the position. The interview was for half an hour. For 15 mins, the interviewer basically just asked questions about my resume. They went into detail about what I worked on and asked questions around that. Then for the next 15 mins, the engineer asked 1 LC easy question. They said my solution wouldn't work for one case, and when I asked the engineer why it wouldn't work, the engineer went silent for two mins, tried to think and then said the time for the interview ran out. They didn't give any opportunity to ask any questions nor did they give any background about the company or the position. From my POV, their mind was already made up from the beginning, I didn't get why they took the interview at all in the first place. Interview was not interested in the slightest. Felt disappointed as I had prepped a lot for the interview, and it was just a huge waste of my time.