Very simple, easy 30 min informal interview. Small technical questions, not LeetCode type. Centered around behavioral-type questions mainly. They really seemed like they were just there to try to get to know you more than anything else.
Easy, but the rigor of the interview depends on the team, project, and funding. My experience may have been an outlier. The standard format, nothing technical. However, it is important to be confident.
I applied online. I interviewed at NASA (Fairmont, WV) in Nov 2017
Interview
It was a non technical interview via phone call. I talked about coding projects I worked on in school. I talked about other experiences I had in sports/school. No coding questions or whiteboarding
Interview questions [1]
Question 1
When do you have experience with having to be a leader and work on a team?