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Interview Questions

Review this list of 348 interview questions and answers verified by hiring managers and candidates.
  • Salesforce logoAsked at Salesforce 
    Add answer
    Video answer for 'Design Ticketmaster'
    Software Engineer
    System Design
  • Google logoAsked at Google 
    7 answers
    Video answer for 'Write functions to serialize and deserialize a list of strings.'
    +4

    "One thing is not clear to me, We encoded the length of the word to a character, but the max number which can be converted to char ascii is 255. How will it work for length till 65535?"

    Curly T. - "One thing is not clear to me, We encoded the length of the word to a character, but the max number which can be converted to char ascii is 255. How will it work for length till 65535?"See full answer

    Software Engineer
    Data Structures & Algorithms
    +1 more
  • WhatsApp logoAsked at WhatsApp 
    4 answers
    Video answer for 'How would you improve WhatsApp?'
    +1

    "goal of whatsapp: to connect people at no cost associated to it, over internet, with complete privacy and 100% encryption clarify improve means? increase # of users increase revenues? increase # of countries its used in ? increase features ? who are the customer personas of whatsapp: students working professionals families individuals SMEs current features of whatsapp : communication: video/audio calls, messages document sh"

    Janakiram P. - "goal of whatsapp: to connect people at no cost associated to it, over internet, with complete privacy and 100% encryption clarify improve means? increase # of users increase revenues? increase # of countries its used in ? increase features ? who are the customer personas of whatsapp: students working professionals families individuals SMEs current features of whatsapp : communication: video/audio calls, messages document sh"See full answer

    Product Design
  • Meta logoAsked at Meta 
    4 answers
    Video answer for 'Design a streaming service like Netflix.'
    +1

    "using a relational database isn't a good choice for this system! we need more availability here than consistency (CAP theorem)"

    Anonymous Capybara - "using a relational database isn't a good choice for this system! we need more availability here than consistency (CAP theorem)"See full answer

    Software Engineer
    System Design
    +2 more
  • "The customer's business needs and requirements. The technical aspects of their legacy system. The budget and timeline constraints. The risks and mitigation strategies. The customer's specific concerns. Assess the feasibility of migrating their legacy system to the cloud - This will involve evaluating the technical aspects of their legacy system, as well as the business impact of the migration. Develop a migration plan -This plan should outline the steps involved in migrat"

    Praful B. - "The customer's business needs and requirements. The technical aspects of their legacy system. The budget and timeline constraints. The risks and mitigation strategies. The customer's specific concerns. Assess the feasibility of migrating their legacy system to the cloud - This will involve evaluating the technical aspects of their legacy system, as well as the business impact of the migration. Develop a migration plan -This plan should outline the steps involved in migrat"See full answer

    Solutions Architect
    Behavioral
    +2 more
  • 🧠 Want an expert answer to a question? Saving questions lets us know what content to make next.

  • "In one of my projects, l analyzed customer purchase data for a retail company to under why sales were decrease"

    Kusheta K. - "In one of my projects, l analyzed customer purchase data for a retail company to under why sales were decrease"See full answer

    Product Analyst
    Data Analysis
    +3 more
  • Google logoAsked at Google 
    3 answers
    Video answer for 'Should Facebook consolidate its messaging applications?'

    "It would be good to talk about the impacts on costs as well"

    Mehdi K. - "It would be good to talk about the impacts on costs as well"See full answer

    Product Strategy
    System Design
  • Goldman Sachs logoAsked at Goldman Sachs 
    4 answers
    Video answer for 'Explain Bayes' theorem.'
    +1

    "Is it bad to get the answer a different way? Will they mark that as not knowing Bayes Theorem or just correct as it is an easier way to get the answer? The way I went is to look at what happens when the factory makes 100 light bulbs. Machine A makes 60 of which 3 are faulty, Machine B makes 40 of which 1.2 are faulty. Therefore the pool of faulty lightbulbs is 3/4.2 = 5/7 from machine A and 1.2/4.2 = 3/7 from Machine B."

    Will I. - "Is it bad to get the answer a different way? Will they mark that as not knowing Bayes Theorem or just correct as it is an easier way to get the answer? The way I went is to look at what happens when the factory makes 100 light bulbs. Machine A makes 60 of which 3 are faulty, Machine B makes 40 of which 1.2 are faulty. Therefore the pool of faulty lightbulbs is 3/4.2 = 5/7 from machine A and 1.2/4.2 = 3/7 from Machine B."See full answer

    Data Scientist
    Concept
    +2 more
  • Amazon logoAsked at Amazon 
    Add answer
    Video answer for 'How would you improve the gifting experience on Amazon?'
    Product Design
  • Google logoAsked at Google 
    2 answers
    Video answer for 'How would you improve Google Drive?'

    "User Persona Individual heavy Users Casual users Enterprise Users Occasional Users I would like to think more about the Enterprise users, because they are the power users and the maximum revenue of the Google may come up with the enterprise solutions. It is my hypothesis that despite of improvement of the Google drive, common individual users are highly unlikely to use the premium version of the G Suite User Journey of the person using Google Drive Want to work on the new document"

    Anonymous Muskox - "User Persona Individual heavy Users Casual users Enterprise Users Occasional Users I would like to think more about the Enterprise users, because they are the power users and the maximum revenue of the Google may come up with the enterprise solutions. It is my hypothesis that despite of improvement of the Google drive, common individual users are highly unlikely to use the premium version of the G Suite User Journey of the person using Google Drive Want to work on the new document"See full answer

    Product Manager
    Product Design
  • Nike logoAsked at Nike 
    29 answers
    Video answer for 'Nike's sitewide conversion has declined year over year. How would you evaluate this?'
    +24

    "A YoY decline in conversion actually seems like it's not that unexpected of a finding but I think you'd need to know how Nike operates. They regularly release sneakers that are limited edition, highly-sought-after, and are sold out within seconds of release. So there are probably a lot of people who are able to add items to their cart, only to find out that the items are actually sold out before they are able to complete the sale. If that were the root cause in this question, I'm curious if ther"

    Spencer W. - "A YoY decline in conversion actually seems like it's not that unexpected of a finding but I think you'd need to know how Nike operates. They regularly release sneakers that are limited edition, highly-sought-after, and are sold out within seconds of release. So there are probably a lot of people who are able to add items to their cart, only to find out that the items are actually sold out before they are able to complete the sale. If that were the root cause in this question, I'm curious if ther"See full answer

    Analytical
    Execution
  • Amazon logoAsked at Amazon 
    14 answers
    Video answer for 'Implement a k-nearest neighbors algorithm.'
    +10

    "Even more faster and vectorized version, using np.linalg.norm - to avoid loop and np.argpartition to select lowest k. We dont need to sort whole array - we need to be sure that first k elements are lower than the rest. import numpy as np def knn(Xtrain, ytrain, X_new, k): distances = np.linalg.norm(Xtrain - Xnew, axis=1) k_indices = np.argpartition(distances, k)[:k] # O(N) selection instead of O(N log N) sort return int(np.sum(ytrain[kindices]) > k / 2.0) `"

    Dinar M. - "Even more faster and vectorized version, using np.linalg.norm - to avoid loop and np.argpartition to select lowest k. We dont need to sort whole array - we need to be sure that first k elements are lower than the rest. import numpy as np def knn(Xtrain, ytrain, X_new, k): distances = np.linalg.norm(Xtrain - Xnew, axis=1) k_indices = np.argpartition(distances, k)[:k] # O(N) selection instead of O(N log N) sort return int(np.sum(ytrain[kindices]) > k / 2.0) `"See full answer

    Machine Learning Engineer
    Coding
    +2 more
  • 4 answers
    Video answer for 'Design Tinder'
    +1

    "It good I think personally Describe the Importance of multiculturalism in Education in detail?2. What is the aim of classroom management, and how can a classroom be managed?3. Discuss in detail the strategies schools or teachers should follow to promote diversity in the school/classroom and implement a multicultural curriculum.4, What are the roles and responsibilities of teachers and school administration in realizing multicultural education in schools or specific classrooms?5. How can schoo"

    Nesru M. - "It good I think personally Describe the Importance of multiculturalism in Education in detail?2. What is the aim of classroom management, and how can a classroom be managed?3. Discuss in detail the strategies schools or teachers should follow to promote diversity in the school/classroom and implement a multicultural curriculum.4, What are the roles and responsibilities of teachers and school administration in realizing multicultural education in schools or specific classrooms?5. How can schoo"See full answer

    System Design
  • "Any answer after this video won't compare. Not an expert. With that caveat out of the way, here is my answer I'd break this work into different phases = Discovery Phase, Planning Phase, Execution Phase, Monitoring phase, Ongoing Discovery : How many Products does this enterprise have? Are we talking about internally developed Products that we sell in the market place? or also third party Products that our enterprise has purchased for internal use? Should we include Operating Systems, net"

    Adib M. - "Any answer after this video won't compare. Not an expert. With that caveat out of the way, here is my answer I'd break this work into different phases = Discovery Phase, Planning Phase, Execution Phase, Monitoring phase, Ongoing Discovery : How many Products does this enterprise have? Are we talking about internally developed Products that we sell in the market place? or also third party Products that our enterprise has purchased for internal use? Should we include Operating Systems, net"See full answer

    Program Sense
  • Google logoAsked at Google 
    4 answers
    Video answer for 'Design a high-tech gym.'
    +1

    "[2:53 pm, 02/12/2021] Mayank: Before we deep dive into brainstorming the solution I go ahead and make few assumptions for clarifying questions: Step-1- Framing a problem 🎯Why users go to gym? To relieve stress by doing exercise To maintain their body To reduce their weight To remain active To make good physique 🎯Who goes to gym? Couples Group of friends Individuals Here we are trying to design high tech gym so it means we are looking to create good experience-and"

    Mayank S. - "[2:53 pm, 02/12/2021] Mayank: Before we deep dive into brainstorming the solution I go ahead and make few assumptions for clarifying questions: Step-1- Framing a problem 🎯Why users go to gym? To relieve stress by doing exercise To maintain their body To reduce their weight To remain active To make good physique 🎯Who goes to gym? Couples Group of friends Individuals Here we are trying to design high tech gym so it means we are looking to create good experience-and"See full answer

    Data Engineer
    Product Design
  • Amazon logoAsked at Amazon 
    10 answers
    Video answer for 'What is your leadership style?'
    +7

    "My leadership style is flexible and adaptive, it varies depending on the team members and the needs of the company. My leadership goal is to empower the team and inspire and grow leaders. In order to achieve that, I combine transformational, democratic and coaching leadership styles. Usually when we are facing a new type of challenge, or at the early stage of a project, I like to adapt the transformational leadership which allows me to listen to all the suggestions from the team members and sta"

    onering2ruleall - "My leadership style is flexible and adaptive, it varies depending on the team members and the needs of the company. My leadership goal is to empower the team and inspire and grow leaders. In order to achieve that, I combine transformational, democratic and coaching leadership styles. Usually when we are facing a new type of challenge, or at the early stage of a project, I like to adapt the transformational leadership which allows me to listen to all the suggestions from the team members and sta"See full answer

    Engineering Manager
    Behavioral
    +5 more
  • Google logoAsked at Google 
    1 answer
    Video answer for 'If Google Maps wants to launch in South Korea, how should it choose between three local vendors for map data?'

    "Clarification: Why South Korea and why Google has expanded their yet. I know there are some government security concerns which have bene in place but how is this integration going to expand Is this something like Google Maps itself or is it tailored to particular needs or region Google Mission & Why we want to expand? Google mission is to organize world's information and make it universally available. The Google Map in South Korea aligns with this as it will help people navigate through t"

    Charmi S. - "Clarification: Why South Korea and why Google has expanded their yet. I know there are some government security concerns which have bene in place but how is this integration going to expand Is this something like Google Maps itself or is it tailored to particular needs or region Google Mission & Why we want to expand? Google mission is to organize world's information and make it universally available. The Google Map in South Korea aligns with this as it will help people navigate through t"See full answer

    Product Manager
    Product Strategy
  • Spotify logoAsked at Spotify 
    3 answers
    Video answer for 'How do you measure the success of Spotify's Discover Weekly feature?'

    "👇 Your feedback is very much appreciated 👇 Spotify's mission is to empower artists to live off their art by sharing their creations with people around the world. This Discover Weekly feature is meant to recommend to each user a customized list of songs based on their interests, trends, and latest releases. Activation \# users using the Discover Weekly feature for the 1st time Engagement CTR or # clicks on songs from the Discover Weekly list \# artists followed through being recomm"

    Julien C. - "👇 Your feedback is very much appreciated 👇 Spotify's mission is to empower artists to live off their art by sharing their creations with people around the world. This Discover Weekly feature is meant to recommend to each user a customized list of songs based on their interests, trends, and latest releases. Activation \# users using the Discover Weekly feature for the 1st time Engagement CTR or # clicks on songs from the Discover Weekly list \# artists followed through being recomm"See full answer

    Analytical
  • LinkedIn logoAsked at LinkedIn 
    40 answers
    Video answer for 'How would you improve Headspace?'
    +35

    "It would be nice if the final Google Docs link can be shared somewhere, so we can access it for reference with ease."

    Dan D. - "It would be nice if the final Google Docs link can be shared somewhere, so we can access it for reference with ease."See full answer

    Product Design
  • Microsoft logoAsked at Microsoft 
    4 answers
    Video answer for 'How would you improve the experience of moving to a new city?'
    +1

    " I would ask some clarifying questions to refine my objective and know about our users? What do you mean by experience? Travel, food, short stay, long stay, dating, event, work, airport, registration? - Improve Food, Travel, Event experience, which can be a short or long stay. What do you mean by the movement to a new city? International travel/ within a specific country (designing solution for any country?) or any geography? - within a country suppose India What is our business objecti"

    Ajinkya P. - " I would ask some clarifying questions to refine my objective and know about our users? What do you mean by experience? Travel, food, short stay, long stay, dating, event, work, airport, registration? - Improve Food, Travel, Event experience, which can be a short or long stay. What do you mean by the movement to a new city? International travel/ within a specific country (designing solution for any country?) or any geography? - within a country suppose India What is our business objecti"See full answer

    Analytical
    Execution
    +1 more
Showing 181-200 of 348
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