The interview process is not much different from what you'd expect from Bay Area Internet companies.

I interviewed about five Bay Area companies, and the interview with Box was one of the best.

• The recruiting team was very efficient, patient, and professional.
• The engineering floor in the Box building is open, clean, and organized; it's hard to walk around and not feel the energy there. In addition to free lunch (maybe dinner as well?) and snacks, they actually offer their software engineers a great collection of business books for free, which I think is very cool.
• The company still feels small (which is a good thing!), even though they will likely go public in 2014. I actually ran into their CEO in the kitchen and had a short but very nice conversation with him.

Same as those you would get from Google/Facebook.