HR - Derek and John were really professional and helpful in explaining the role and job duties at zscaler I had two technical rounds by technical leads 45 minutes each First round was good, interviewer was calm throughout the interview and gave me opportunity to ask questions and answered them positively Only issue was interviewer did not start the camera, felt like was talking to a wall Second round with another technical lead - This was the worse round as the interviewer lacked basic interviewing skills, again no camera on, interviewer kept interrupting throughout the interview and was also mentioning what he expected from the questions he asked which was bizarre EG: In a question what happens when a url is entered - This guy was expecting tcp mss/mtu details and if not answered, he will interrupt and express his displeasure in the middle of the interview Interview was for 45 minutes and this guy continued for another 15 minutes without giving me any opportunities to ask questions. Ended the interview as soon as he realized it’s an hour Second thing I noticed it seems the hiring manager gives more importance to these technical leads review as there is no hiring manager interview first before the technical rounds usually which is the case with most leading organizations Your industry experience of handling and working with customers does not matter here, gave me an impression you can be rough with customer and that is fine by them