Box Senior Software Engineer interview questions

They have very young children interviewing senior developers. Some kids appear to have an overwhelming amount of arrogance coupled with an underwhelming IQ level. I asked one of them for some water and he actually said that there is no bottled water on this floor and we can just get it after the interview (a cup and a water cooler would've have sufficed). That gave me an unsettling idea of what I was dealing with. The biggest issue I had was with the elevator design question. I actually did very well on the hands on coding exercise. I don't know how I did on the algorithm question. I thought I did well, but that could just be my opinion. For the elevator design question my mistake may have been coming up with a very elaborate design. Unfortunately, the youngster interviewing me wanted me to write some very specific code on the whiteboard, possibly some trivial queue processing code. I have more than a decades worth of experience designing scalable and fault tolerant systems but was unable to prove that to him. This person had a very thick accent and communication with him was rather confusing. He said this was an open ended design question, but I am guessing he thought this question had only 1 answer in the form of some simple code on the whiteboard. I am very glad I didn't get the job (no, not sour grapes). The work culture appeared to have subtle signs of toxicity. From the discussion with one of the developers it appears the codebase is a giant monolithic mess which they are trying to desperately untangle. However, if you are enticed by the unlimited candies, free exotic softdrinks and free food then just practice the answers to these 3 simple questions (they actually can't come up with new questions): elevator design (50 floors 4 elevators), unival tree, in-memory db/cache

Quite standard interview process. Got a call from the recruiter to discuss their interest in me for a particular backend role. I decided to proceed further. I was then setup for a 45min phone interview with a senior engineer. The call involved some discussion regarding my background and interests and one sizable coding question. Since there was more time left after that I was asked some more questions regarding concurrency and multi-threading. Got a callback within a couple of days inviting me for the onsite round. The onsite interview was full day starting at 10am and ending around 5pm. Multiple rounds involving coding and design. All went well got an offer in a couple of days. Negotiated and got what I wanted. Overall very smooth process, amazing recruiting team, everything was over in a couple of weeks.