Well, if you're a great executor and great leader, but you can't design a great end-to-end product experience, then product management is going to be poor fit. And lo and behold, he was asked about it, and it didn’t go so well. Find the algorithm. As a business built on advertising revenues, it's critical that Facebook grows and maintains a large base of users who they can effectively monetize by selling ads to advertisers that want to reach that base. If this happens to you, however, I suggest you tell your interviewer, as it’s very easy for them to tell if you know the problem before or not, and if you just recite the answer it defeats the purpose of the interview. Even though I didn’t have one myself, I did prepare for the System Design interviews. The DAU for Facebook Messenger is down 4.3% WoW. Practice with time constraints of thirty to forty-five minutes, write code without the aid of an IDE, etc. That was actually possibly *the* interview that got me hired, and it was also the one I most enjoyed. We've gone into the key metrics in great detail in our Facebook data pack here, but here we'll highlight some solid starting points. Solve all the problems you jotted down on Day 25. The way you dress for a job interview tells potential employers a lot about you. It’s fine to pause and think quietly for a bit, but don’t stand there for 3 minutes without a word. Don’t code, solve the problems only (i.e. Pick up Introduction to Algorithms (CLRS) and start studying them first. several problems are on binary search, which is extremely likely to come up in an interview – more so than any other algorithm), and their answers (and the code provided) are almost all correct and excellent. The part that follows below (Day 1 onwards) is the actually valuable part that I can offer you. Questions are so often underspecified, and this is a huge weakness of Elements of Programming Interviews: all problems are specified completely, so you have next to no training on this. The cool and not-so-convenient thing about tech interviews is that you really never know what you’re going to get, so you have to be prepared for a huge range of possible topics, some of which are more likely to occur than others. Shake it off, move on to another problem. Here’s how I would plan said month (assuming a full-time schedule). For example, if you're asked about how to increase MAU by 5%, if you know that MAU is already 2.2B you'll know how big of a challenge that would be. Here are a few tips on how to prepare for a job interview in English. On Day 3, do Chapter 6, and the Chapter 6-related problems in Chapter 22, and so on. You might be nervous before an interview, but it’ll pass. (To be completely honest, I might’ve skipped a few, but this was more by accident than anything else, and I definitely did like 98%+ of them.) Pick an industry and tell us about how it will be different in 5 years and how Facebook could play a role. Even though I didn’t have one myself, I did prepare for the System Design interviews. If you interviewed in the morning, send your follow-up emails the same day. Interview. If it is a panel interview, ask a couple of friends to pretend to be a panel. Plus study sheets on key concepts. You could ask a friend to quiz you. Not only will it help provide context for your interview conversations, but it will also help you when preparing thoughtful questions for your interviewers. In the next two weeks, your team can either fix a bug or launch a new feature. (To be completely honest, I might’ve skipped a few, but this was more by accident than anything else, and I definitely did like 98%+ of them.) Get RocketBlocks, PM criteria | Sample questions | Metrics and culture. (e.g: Okay, to search a sorted array, we can scan it linearly, but this is an O(n) solution and there’s likely something faster). Always at least give the simple solution, which very well might not have a great run-time, but it won’t hurt. (I imagine a reason for that may actually be its low popularity compared to other interview books, as companies ban questions that are ‘out there’ from being asked in interviews, which is why you probably won’t see questions from Cracking the Coding Interview.) One possible exception to this is if they’re challenging your code: they’re either really pointing out a bug to you, or trying to make it seem that way to see how confident you are in your code and if you’ll agree blindly or protest that your code is actually correct (if this happens, don’t panic, just think well about your answer before you give it. 3. How to Prepare for Facebook PM Interviews. 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