Check in, four interviewers, lunch with the hiring manager or another member of the team. You'll get asked sufficiently difficult questions. There is a small tech phone screen to make sure you actually dev chops. They're not trying to trick you.

Kudos to the team for completing the entire process in a week. Got a call from recruiter whether I would be interested in exploring an opportunity. Then they setup Round 1 which essentially might be for filtering candidates. Round 1 : ~40mins Technical round Quick overview on projects mentioned in resume. C programming concepts. Predicting output. Linked list basic questions. Strings IPC Round 2 ~1 hr Technical round Interviewer was calm. Took few minutes to introduce himself and his work. Covered basic aspects of C and oop languages. Round 3 1hr Techno-Managerial round System design question Small puzzle on array Manager was very calm and supportive throughout. Explained about every detail on the projects that are carried out at the company. Behvaioural questions. Round 4 1 hr Techno-Managerial round Spoke with the Director. More behavioural questions. Took his time in explaining companies vision and the role they are hiring for.