I applied online. The process took 4 weeks. I interviewed at Greenpeace (Washington, DC) in Apr 2015
Interview
It was relatively straightforward--they sent an email and asked for an interview. However, they were incredibly unorganized. They would set up interview times--then email again minutes later and say "just kidding." Further, they would call during the time that they had already cancelled--this happened three times during the course of my interview process. Not every department is as disorganized, it is mainly HR.
I was interviewed by the HR manager, the Finance manager and the Finance Assistant. It took me about 20 minutes for the interview section. I was still a student at that time so they asked me a lot of my campus activities and my exchange program.
Interview questions [1]
Question 1
What is your Excel level? What fouctions do you know?