NI came to my university's career fair. After I talked to them and submitted my resume, they called me that night to set up an interview for the next day. The 30 minute interview was with 2 recruiters. It started off with some questions about my interests and past projects. After the behavioral part, they asked one pretty simple technical question. After I answered it, they asked me one follow up question about it. The last 5 or so minutes were for additional questions. They took me out to dinner that night and I got my offer after a week.

I submitted an online application and they were able to give me an interview soon. They were very nice and there were some technical questions on data structures. Specifically with binary tree.