First Interview: Was basic, they asked a whole bunch of behavioral questions. They also asked a trick solving question about a pulley system and how you can find out which of the four block is the lightest by only using the pulley twice. They give you a few minutes to think it through, I wasn't able to answer the question completely but I still got a second interview. So I wouldn't stress over it. Second interview: They fly you out and the day you arrive you have to present and listen to other sectors of their business. You stay up really late so be prepared. The presentation was short and simple. You are placed in a group before you arrive and you have to present about a topic. I would study up on all of the topics since you are going to have to choose a sector towards the end to work for. The next day you wake up early to view the different sites they have nearby. Then, you have a short 15 min one-on-one session. They didn't ask me anything big other than why you choose the sector you want to apply for. After that you go out and eat as a group. The next morning you are flying out. Overall, I would say be yourself and ask as many questions as possible.

1st round interview included short technical question, and telling about myself and the projects I worked on. Not difficult/or hard, but just need to explain well enough to tell the logic process