I was given a 30-minute phone interview during which I answered most of the questions (I missed one or two).

Two days later, I received an email requesting me to complete a "homework assignment" within seven days. I completed and submitted it on the fifth day (taking my time), and was notified the next morning that I had been invited to their office for interviews.

I was offered Uber credits to get me to and from the location, but I did not manage to use them successfully as I was unfamiliar with the product before the interviews took place. I arrived at 11 a.m. and had four hour-long interviews with engineers from various teams, including one who is now my manager.

Two interviewers merely wanted to get to know me and gain a sense of my experience, seeing if I was a fit for their team. These interviews were mutual conversations where their experiences sold me on whether or not I wanted to work there.

The other two interviews were largely conversational, but each included one technical question. After some back-and-forth work, I managed to solve both problems reasonably and left the interviews feeling confident.

I was told the next day that I would be made an offer based on my experience (but the offer had not yet been extended). Unfortunately, I was then informed that upper-level management felt my interviews had not been technical enough, and I had to have one more technical interview (ugh!).

Two days later, I traveled to their office again and had my final interview, where I was asked the question below about defining, storing, and retrieving structs.

Ultimately, I had a good experience where it paid to know my domain thoroughly. Uber ATG's interview process was formal but had an informal, personal feeling to it, only marred by some disorganization that I am now trying to help them resolve for future interviewees.

Whiteboard question, written in C:

You have a homogeneous fixed-size data structure ("arena") to house structs that should do X (vague description).

Define the struct.

Define a function that stores it in the arena.

Define a function that retrieves it from the arena.