At the beginning, they will ask some behavior questions, such as tell me a time when you anticipate a problem and prevent it. Then, they will ask some basic c++ and Matlab questions such as how to create a 3 by 3 matrix in Matlab and how to concatenate them.

I had a hiring manager call me for HR and technical phone interviews. This was followed by another phone interview by an HR. I was invited for onsite interview. 15 days after the onsite interview (a 45 minute presentation followed by 5 rounds of interview) they contacted me saying they received positive feedback but my background is not a perfect match and so they want to consider me for the same position under another manager. This was followed by a tech phone interview in C & C++. 4 days later I was interviewed for another position which was not familiar with. 4 days later they emailed me saying the first position was filled internally and I didn't fit the background for the second position.