Datadog Site Reliability Engineer interview questions

Typical recruiter meet and greet where they then scheduled an hour-long technical assessment with a senior engineer. Through a zoom meeting, we went through a little bit of my background like my most notable project. Then we went straight to a coding quiz on coderpad. There were two questions. They were simple data structure manipulation type questions that involved hashes and arrays. I got through the first one pretty easily, but stumbled a bit on the second one, and unfortunately did not complete it. After the initial solution, they expect you to explain the time complexity of your functions. Unfortunately for me, I have no practical/theoretical experience with big O notation, so I stumbled through that with a lot of "I would have to look that up" type answers. Overall it was a pretty okay experience, the senior engineer was cordial and gave leading advice if I got hung up somewhere while coding. However, as an industry, it's kind of sad we still evaluate technical skills through these leetcode and theoretical type scenarios. For someone that already has a job it's stressful to grind leetcode and memorize "Cracking the coding interview" in order to get the job you know you can do.