I applied online and get contacted by HR in 3 days. We scheduled for a brief interview and talked about my background, job requirements, and how are things in the climate corp. Next, there was this statistical challenge where they sent me a data set and a problem based on that. They want you to get it done within 24hrs. I slogged all day to solve the problem. After submitting the project, I heard no word from them. It has been a month.