They did not have a job description to share. Out of their own vagueness of the role, they passed their confusion to me. Some of the managers were condescending and in disagreement with each others; one hand not talking to the other it seemed. They continued the arduous process despite dropping signals that they weren't going to hire. I should have stopped but considering they were moving to next steps, I assumed positive intent and my excitement towards the technology kept me going. There was a presentation round, for which I prepared slides and practiced for 4 days days only to have 3 people out of a panel of 10 show up. I have interviewed at many places in the past and landed offers and roles at some very competitive ones. This, by far was the worst interviewing experience. A learning on what to watch out for. On the positive side, certainly helped me create better boundaries for the future.