I applied online. The process took 2 months. I interviewed at Library of Congress (Washington, DC) in Jul 2015
Interview
Structured interview. Panel asked questions related to skills and abilities. They sought examples of situation, task, action, result. Then they asked random questions about background and experience. They took turns asking questions, and wrote down notes about responses. The process took one hour.
Interview questions [1]
Question 1
Who do you know on Capitol Hill? meaning, Who do you know well who can help us keep our sweet jobs?