I applied online. The process took 2 months. I interviewed at Plan International (Washington, DC) in Feb 2016
Interview
Not very impressive interview process. The phone screen went well enough but the face to face meeting was not very professional. The person I interviewed was dressed like she / he was going to the movies and didn't even give me a business card. The main office space was dark and somewhat uninviting as I walked through to the interview room. There was no pulse in the office. The person I interviewed with was nice, though and we got on well. I did not receive any follow up after the interview, even to say I was not successful.