Interview Questions

Anonymous Hornet - "To handle the non-uniform sampling, I'd first clean and divide the dataset into chunks of n second interval 'uniform' trajectory data(e.g. 5s or 10s trajectories). This gives us a cleaner trajectory data chunks, T, of format (ship_ID, x, y, z, timestamp) to be formed. For the system itself, I'd use a generative model, e.g. Variational AutoEncoder (VAE), and train the model's 'encoder' to produce a latent-space representation of input features (x,y,z,timestamp) from T, and it's 'decoder' to pred"See full answer

Jayveer S. - "WITH suspicious_transactions AS ( SELECT c.first_name, c.last_name, t.receipt_number, COUNT(t.receiptnumber) OVER (PARTITION BY c.customerid) AS noofoffences FROM customers c JOIN transactions t ON c.customerid = t.customerid WHERE t.receipt_number LIKE '%999%' OR t.receipt_number LIKE '%1234%' OR t.receipt_number LIKE '%XYZ%' ) SELECT first_name, last_name, receipt_number, noofoffences FROM suspicious_transactions WHERE noofoffences >= 2;"See full answer

Andrea L. - "Clarification Questions: Through in-person purchases or including online? Both Cinema just for movies? Yes Amount of revenue or just tickets sold? Tickets sold High Level Equation: Cinema tickets in a year = (# of cinemas in the US) * (# of movie playings per cinema per year) * (# of viewers per cinema per screening) \# of Cinemas in the US = amount of states * average number of cinemas per state High Density Areas - 30% - 50 cinemas = 50 x 50 x .3 = 750 Suburban T"See full answer

Exponent - "You should be able to identify this as a Strategy Question, which asks you to justify high-level business decisions and strategy. Here are some ideas for risks to Airbnb: Regulation > I believe the biggest risk to Airbnb is regulation, both from local and foreign governments. Already, Airbnb is subject to onerous laws in foreign countries. For example, homes in London can only be booked for a total of 90 days in London, and in Japan hosts must apply and register their listing with the gov"See full answer

Tanu M. - "When it comes to Metrics, I always think of one thing " What cannot be measured cannot be done". The product that I am managing goal is on enabling the products for our partners so that our partners can have a seamless experience of doing business with us which in turn will increase the revenue. The user segment for my product is mainly resellers who can resell the product to another customer so that the reach of the customers is more. The metrics which I am tracking are revenue, referrals, an"See full answer

Rajeev K. - "At Kabuk Style, I found myself managing two major initiatives at the same time both of which had high visibility and were critical to the business. On one side, I was leading the launch of our PCI-compliant HafH Coin Wallet, which required tight coordination with compliance and engineering teams. At the same time, I was overseeing the integration of over 200K+ property listings through global partners like SiteMinder and Hotelbeds. These projects had overlapping timelines, limited engineering"See full answer

Ian R. - "You might build a product like this a few ways. I think you'd definitely want a temperature sensor device (maybe like a TMP422, or maybe there's a different one that is standard for wearables) that was worn by the individual. As far as tracking social distance, my answer here is more dependent on the state of the art of robust (wearable) distance measurement. Maybe there's something available better than ultrasonic sensors, maybe there's some kind of electromagnetism based solution that isn't in"See full answer

William W. - "Clarifying questions Why is this company interested in building a vending machine for disabled people? We're a vending machine company who has recently learned that disabled people have a lot of trouble using our machines. We want to change that. What is the main metric this company is trying to drive? Machine usage Is there a specific kind of disability we are interested in targeting? Blind, amputees etc. Blind/vision impaired people Is there a specific type"See full answer

Jax H. - "Let’s pick SFO (because it's a stupid choice.. probably easier if you pick a smaller airport) We know each passenger has to go through the scan at least once We can assume 10% of passengers go through twice People only go through scans when they depart but not when they arrive International planes are bigger so carry more people so need to calculate separately Approach Estimate how many gates there are Estimate airport operation hours Estimate the numbe"See full answer

Frederick A. - "This problem can be solved with two approaches Iterative approach Recursive approach Quite easy to think about the iterative approach, you can make use of a while loop in that case. But what if you want to make use of previously computed values? That case going for the recursive solution is quite useful. class Collatz: def init(self) -> None: self.cache = {} self.steps = 0 def steps_from(self, n) -> int: # base case if n == 1: "See full answer

Ben G. - "Mobile typically involves creating designs optimized for smaller screens and touch-based interactions, while desktop designs are optimized for larger screens and mouse-based interactions. Mobile Pros: Greater accessibility: Mobile apps can be used anywhere, as long as the user has their phone. This makes them convenient for people whose rhythm of life is relatively high and requires quick and convenient access to modern technology, services, and gadgets. Wider audience: There are"See full answer

Graig - "I faced twice and it always slows down the career trajectory of engineers with complete context loss of previous hard earned projects"See full answer

Mark - "Clarification Am I the PM for overall Xbox or certain part of the Xbox team? Interview (I): let's assume you own the overall Xbox product Are there particular user segments that the MSFT Gaming division is trying to focus on as their strategy? I: nothing in particular, why don't you tell me where we should focus? What are some challenges that Xbox have been facing? (ie revenue from xbox hardware purchase? xbox live subscription purchase? engagement?) I: nothing in pa"See full answer