National Instruments Software Engineer Intern interview questions

One phone screen and an onsite. For phone screen, asked about projects and a basic data structures question for sorts. For onsite, asked me to draw a block diagram of how I would record our conversation and store in a flash drive plus an easy coding question. Interviewed with a Staff engineer and Manager. It was a fun interview overall.

On campus interview after career fair. Asked me to find the average of numbers in a binary search tree.