I applied online. I interviewed at National Radio Astronomy Observatory (NRAO) (Charlottesville, VA)
Interview
You first have a phone Interview and then you will be invited for the on-site interview. I had 4 people at the interview to ask questions about my knowledge and skills. Took about 1 month
Interview questions [1]
Question 1
I was asked to find the problem of the given sample software model and how I can solve it.