I applied online. The process took 2 weeks. I interviewed at Cleantech Group (San Francisco, CA) in Jan 2014
Interview
One phone interview. Pretty informal. It was a behavioral interview that lasted about 30 minutes. Pretty generic, asked about why Cleantech Group, why are you interested in Cleantech and what Cleantech innovation that I thought was really interesting.
Interview questions [1]
Question 1
What cleantech innovation do you think can change the world?