Two rounds of interview was there. First round was a technical round.
Technical interview was from on-site. There where networking questions about sockets, skbuff structure in ethernet, MTU size, jumbo frames. Explained about the projects I was working with.
The second round was a personal interview. I was asked to explain about the previous employers and experience. They asked about how the services and the product company differs, how the application domain and technology domain differs and the reason for change of employment.
After one day of the interview I was sent the offer letter.