The interview process is rather informal. You'll find yourself in a casual setting where the CEO assesses your skills and your ability to handle the tasks at hand. Your capability to articulate your experiences effectively will definitely make you stand out.
I applied through a recruiter. The process took 1 day. I interviewed at PetroEd
Interview
There was a single one-on-one interview with the owner of the company. All the questions were very straightforward, and the whole process lasted less than ten minutes. Most of the interview consisted of the interviewer explaining the history of the company and what my function would be within the company.