Typical 30 minute phone screen, but the assessment seems overkill. The assessment is proctored and my proctor didn't even show up until 20 minutes later, right before I almost left the session. In terms of the assessment itself, there are 4 sections: 1 - Math and Brain Teaser Round: This round involves 2 minutes of solving math problems and I think a few brain teasers as well. Very difficult to get all of the problems done I'd imagine. 2 - SAT Math - 45-60 minutes of SAT style math questions. I think there were like 13 questions total, but there were also some brain teasers involved. 3 - Learn a new language: Personally I think this section was fine. 4 - Leetcode style problems: You're given 4 problems and are to code in a text editor. No syntax highlighting or running the code is allowed, so you better hope your code runs perfectly. I would have rated overall experience neutral if the proctor had shown up on time or at least not 20 minutes late. The phone interview was quite positive and I had a good time talking with the software engineer, but the assessment definitely brings down the experience due to its length, difficulty, and unnecessary use of brain teasers.