I applied online. The process took 4 days. I interviewed at Aspen Systems (Wheat Ridge, CO) in Nov 2015
Interview
If you are considering a position at this company I would strongly suggest the following: Do a search on linked in for people who list this company as their PAST employer and reach out to them; see what they have to say about the place and make your own judgement.
Interview questions [1]
Question 1
How much experience have you had building HPC clusters?