I applied through university. I interviewed at Fannie Mae
Interview
Was given an interview on campus with Fannie Mae. They just asked me questions about my resume. Do research on the company, they will ask you what you know about it.
I applied through other source. I interviewed at Fannie Mae (Washington, DC) in Nov 2015
Interview
Involved a phone screen for about a half hour where the recruiter asked about my resume and what I would be interested in. The onsite interview day a couple of weeks later had 3 one on one interviews. It was a very relaxed interview day and everyone was very nice and friendly.
Interview questions [1]
Question 1
Standard behavioral questions, as well as asking about technical experience