Interview Questions

Anonymous Cheetah - "First profile the URL/Webpage to see which components are limiting/blocking the loading of Web page. Based on the observation, identify if it is the latency, server, network or the sheer number of elements that make up the page. Accordingly plan the optimization strategy."See full answer

Lucas G. - "select sub.name subreddit_name, count(distinct us.userid) totalusers from user_subreddit as us left join subreddit as sub on us.subredditid = sub.subredditid group by us.subreddit_id having count(distinct us.user_id) > 3"See full answer

Mridul J. - "We have a list of documents. We want to build an index that maps keywords to documents containing them. Then, given a query keyword, we can efficiently retrieve all matching documents. docs = [ "Python is great for data science", "C++ is a powerful language", "Python supports OOP and functional programming", "Weather today is sunny", "Weather forecast shows rain" ]"See full answer

Tiago R. - "function areSentencesSimilar(sentence1, sentence2, similarPairs) { if (sentence1.length !== sentence2.length) return false; for (let i=0; i (w1 === word1 && !visited.has(w2)) || (w2 === word1 && !visited.has(w1))); if (!edge) { "See full answer

Debajyoti B. - "As far as i know, when we type a web address in the browser- the broswer connects to the DNS server & finds the address of the website we are looking for after finding it, the browser sends an HTTP request message to the server,with a request to send a copy of the website to the user. all of this information is sent using TCP/IP protocol across your internet"See full answer

Anonymous Crayfish - "Let me tell you about a time when I solved a problem at my previous company (one of the top 10 Fortune 500 companies). This was an internship and I was coming with almost 2 years of experience and 2 semesters of my graduate program. My experiences have mostly been theoretical or with startups. I've never solved problems at scale. The first week at this team was slow and relaxed, it was just onboarding. The real work started from the 2nd week when I felt like I was pushed into the ocean with n"See full answer

Garrett M. - "Do they ask these kinds of rapid fire questions?"See full answer

Anonymous Kingfisher - "The interviewer focused on the data models and steered the conversation there from the beginning. He had a specific design in mind and I just wasn't hitting it. He also wanted details on how I would implement the logic for splitting users into variants. I would recommend reading the LinkedIn blog on their AB Test system design."See full answer

Adesegun K. - "While all branches should ideally be tested, some are more critical than others based on the following factors: A. High-Risk or Business-Critical Logic Branches that handle authentication & authorization (e.g., login, role-based access control) Financial transactions or payment processing logic (e.g., tax calculations, refunds, invoice generation) Security-related branches (e.g., encryption/decryption, token verification) B. Error Handling & Exception Paths Branches that deal with error conditi"See full answer

Mark - "Clarifying questions: what's the original goal of this feature? what user problem / issues we identified that we are trying to address? Is there a particular user base or market/regions that we are trying to solve this issue for? Is the experience going to impact the rider's action? or does it also change the driver experience? Assume: the issue we are solving for is focus on the rider's experience - the goal of this feature is to increase the % of matched ride (ie rider/driver matche"See full answer

Adarsh S. - "Hey, Thanks for the question - it’s a fantastic challenge with real-world impact. Cool so this is the rough backbone structure that we can follow and ofcourse we can add meat later on to it and pivot if required. So here it goes: First would like to lay out the broader mission as to why we are doing this and then some clarification questions and then probably try to segment users via single or different approaches, then will pick which permutation makes sense as the target segment, then ge"See full answer

Himanshu V. - "Video engagement: time spent, frequency, recency Video completion rate Time spent on Facebook vs Time spent on watching FB videos Video recommendation: Switching from 1st to 2nd and so on "See full answer