Contractor applicants have rated the interview process at NASA with 4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 83.8% positive. This is according to Glassdoor user ratings.
Here are the most commonly searched roles for interview reports -
2 interviews, one with HR and another with the project manager. They ask many questions about engineering-related problems and come up with random situations in which you have to explain how you would deal with them.