2 rounds of interviews, online, each round with 2 members of team. Each round was around 1 hour long, mainly technical with a brief discussion about motivation related. Technical content was mainly related to mathematical problem solving

Online interview via Webx. Interviewer came in late and asked for 10 additional mins to read through my resume. First question is to ask if salary is negotiable. The lower range of the expected salary that I wrote is 4k and the role is a Computer Vision Engineer. There is also a lack of professionalism from the interviewer when I asked him to repeat parts of the question. He tried to just end the interview and tried to ignore me when I am trying to clarify what he was trying to ask. HR also did not reply when I tried to get more details about the interview process.