First round was with HR, second round was technical discussion with senior engineer. Information in the job description and in the first round were completely different to what information was given in the second round - tech stack, project information. The technical round was kind of a "let's see how I can get to a topic you don't know anything about" which is a bit offensive when interviewing for a senior engineer role. Interviewer apparently wasn't in the mood or wasn't prepared at all, so he just randomly asked any questions he could think of - mostly around app architecture. I was also asked how would I deal with a situation where feature is estimated to 4 weeks of work and I'm asked to deliver it in 2 weeks.