Interview Questions

Anonymous Jaguar - "Code reviews, automated linting, unit tests, integration tests, validation tests"See full answer

Lucas G. - "I would conduct a sample z-test because we have enough samples and the population variance is known. H1: average monthly spending per user is $50 H0: average monthly spending per user is greater $50 One-sample z-test x_bar = $85 mu = $50 s = $20 n = 100 x_bar - mu / (s / sqrt(n) = 17.5 17.5 is the z-score that we will need to associate with its corresponding p-value. However, the z-score is very high, so the p-value will be very close to zero, which is much less than the standa"See full answer

Dev S. - "Clarfying questions : When we say a decrease in users adding the bank accounts. I would like to understand how the users making payments within Venmo I assume they are either using their credit cards/debit cards? I would like to understand why the Adding of Bank Accounts is integral to Venmo since the users are using the debit card and Credit Cards. My understanding is when the payments happen through debit cards rails Venmo pays higher interchange fees and to Reduces any losses incurred"See full answer

Anonymous Sparrow - "Clarifying question: board meetings have varying degrees of formality, usually dependent on the size of the company and whether it's publicly-listed or still private. Is there a particular type of board meetings you'd like me to focus on? (Assume interviewer responds with: why don't you design something that's flexible to be used for any type of board meeting and any type of company) Sounds good, I'll leverage my own experience and understandings on how board meetings are run and problems to so"See full answer

U K. - "Additional of COVID disclaimers to COVID related reels in instagram has helped users to navigate the crisis effectively as well as get the facts addressed regarding the vaccine."See full answer

shg - "In my experience, project success translates to three things: Customer Success => Quality increments to service leading to customer success. (Measure by KPIs like customer satisfaction score, SLA, Revenue growth etc) Team Success => High Team morale with successful execution and collaboration of project. Individual Success => Individual career goals and aspirations are met I think the later two are difficult are measured via KPIs. Although there can be indirect KPIs to measure those as we"See full answer

Adib M. - "Useful article on API migration https://www.linkedin.com/pulse/tips-successful-api-migration-pooja-nihalani/"See full answer

Abdurhman M. - "Graphic design is the process of visual communication and problem-solving through the use of typography, photography"See full answer

Joshua R. - "Hadoop is better than PySpark when you are dealing with extremely large scale, batch oriented, non-iterative workloads where in-memory computing isn't feasible/ necessary, like log storage or ETL workflows that don't require high response times. It's also better in situations where the Hadoop ecosystem is already deeply embedded and where there is a need for resource conscious, fault tolerant computation without the overhead of Spark's memory constraints. In these such scenarios, Hadoop's disk-b"See full answer

Anonymous Hummingbird - "Q: How do we know that they spend too much time in the app? A: User research/Qualitative survey goal: decrease dissatisfaction that they spend too much time in IG Persona's, lets segment based on usage: New users: just signed up and getting the hang of it lurkers: don't post or engage, just follow contributors: post occasionally (stories + posts) super users/micro influencers: post daily, engage with commenters, spend a lot of time in discover tab IG mission statement is to capture and s"See full answer

Frank A. - "1) create the experimental and control groups. 2) Then calculate the proportion (mean) of the true conversion rates for both groups using the convert column which counts True as 1 and False as 0. This is their conversion rates 3) calculate the statistic of the two groups by subtracting the proportion and standardizing. 4) get the p-value and compare with 0.05. 5) conclude the difference is statistically significant if the p-value is less than 0.05 otherwise no statistical difference"See full answer

Pm P. - "Alexa: Is the virtual assistant that runs on amazon smart speakers as well as on other devices. Clarification on goals/Objectives: What would the goal at that point of time be? Is it increase in revenue ? Either via new customers i.e. adoption or Increasing the wallet share of the customer? Increasing the sales ordered via Alexa ? Why do people want to use Alexa? To get answers, make their lives easier by automating activities within their home Integrates with amazon account so"See full answer

Olasile A. - "How would you decide on ad placement on Pinterest? First I would ask clarifying questions as to the reason why no ads have been placed in the top left section of the page feed. Is this more strategic to Pinterest's mission? Is this by design to lay out the architecture of the page feed this way? In the prompt, it is explained that the company is targeting revenue increase as a goal this quarter. Are there alternatives means to generate more revenue in order not to compromise our values an"See full answer

Ilnur I. - "I can try to summarize their discussion as I remembered. Linear regression is one of the method to predict target (Y) using features (X). Formula for linear regression is a linear function of features. The aim is to choose coefficients (Teta) of the prediction function in such a way that the difference between target and prediction is least in average. This difference between target and prediction is called loss function. The form of this loss function could be dependent from the particular real"See full answer

Ban N. - "Follow news and resources via conferences or top companies' blogs, such as NeurIPS 2023 or Google Research Blog to get updates about the machine learning landscape. Research the papers on the new technology or approach that was mentioned or introduced via the subscribed sources, such as listed above. Following media channels, podcasts, or influencers on social media who were recently active in the industry to catch up with the trending and valuable insights, research, thoughts... Scan Github"See full answer