Uber Software Engineer interview questions

I did three phone interviews and later an onsite interview. The process was very smooth and everything was scheduled properly and the HR and the recruiters did a great job on communicating and arranging all the steps. However, during the technical interviews some employees were not prepared and had the wrong attitude. Overall it looked like the employees are forced to do interviews. I did not get an offer mainly due to my own low performance on the day of on-site interview. As during the interview I was interviewing the company as well, here is my take from the process. The person who was doing the phone interview showed up 20 minutes late and also at some point could not explain the whole problem in details as he forgot the details of the data structure in question. It's understandable since the data structure was a bit complicated but the expectation is the interviewer be more prepared for the interview. On the onsite interview, during the first interview which was a junior developer that was planned to be mentored during the interview but was not, after I explained my PhD research he sarcastically commented that this is similar to what he learned in college few years back! And then awkward silence pursued as I doing a face palm was probably inappropriate. The problem is not that he was wrong, but the problem is the lack of understanding that PhD is not about sending rockets to mars, it's about learning the required skills to go through piles of previous works, be able to reason and find problems that are not yet solved, solve a few of them and be able to clearly and simply state the problem and your solution and why it matters. This comment coming from a person that was working with a team of researchers along with the attitude was a clear red flag right out of the bat. The rest of the interview was conducted by more senior and professional people, except the last one. Which was done by two employees, and for some reason one of them insisted to show that he is a slacker. He was constantly blown away by the answer his colleague was giving to my questions regarding the structure of the teams and how things are done and stated that he did not know any of that. Worse, at the very beginning he was asking how the food was and the fact that he was hired two months ago and did not do anything except showing up everyday to eat the food!!!?!?!?! Again awkward silence pursued! both arrogant and slacker team members?! thanks, but no thanks. On the plus side, the company seemed to care for their employees, the HR team were very professional, and there were other employees that I enjoyed talking to. Overall Uber and I both failed to impress each other and it's as good as the case we both succeed at impressing each other. Uber already has an image problem and and their interview process does not help with improving that image.

I was contacted by a recruiter via linkedIn and scheduled a phone screen a week later. The phone screen began with asking details about my current projects and then delved in to a collaborative coding on coderpad.