Interview Questions

Andrew M. - "DMV is the Department for Motor Vehicles, notorious for long wait times and an overall poor customer experience. I'm not familiar with the different functions that the DMV serves, but from my understanding, people go to the DMV when they want to renew their drivers licenses, so I would like to focus on that for now. Current experience: Long wait time to get drivers license photo taken I am really not familiar with any other services the DMV provides, so I will focus on taking photos. Pain"See full answer

Aikya S. - "from typing import List def find_rotations(nums: List[int]) -> int: left = 0 right = len(nums) - 1 if len(nums) < 2 or nums[left] < nums[right]: return 0 while(left + 1 < right): mid = left + (right - left) // 2 if nums[mid] < nums[left]: right = mid else: left = mid return left + 1 `"See full answer

M N. - "Driver retention is important to ensure growth since we need healthy retention of existing drivers while we acquire new drivers so that we meet growing demand. Should we look at a specific driver segment to improve retention? We might divide the drivers by their age on the platform: New drivers(less than 3 months since first ride), Medium age (3mos to 1 year), Long term(1+ years). Let's focus on the medium term since I assume them to be the biggest segment. Now lets try to list out possible pr"See full answer

Rajeev K. - "Here's how I'd approach investing that $10 million over the next year and a half. The biggest chunk about $4 million would go straight into our core infrastructure because that's what everything else depends on. We're seeing massive demand for real-time payments, so I'd put $2.5 million into building instant settlement capabilities and integrating with FedNow and RTP rails. The remaining $1.5 million would beef up our platform scalability because we're hitting capacity limits during peak times,"See full answer

S G. - "If it's a product end to end, then there's a lot to say. If it's just a feature on top of a product then I will focus on the complexity and how I break complex tasks into small milestones to partner with XFN teams to nail it. Focus on situation, task, actions and results"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

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

Aneesha K. - "-- Write your query here select u.userid as userid, IFNULL(sum(purchase_value), 0) AS LTV FROM user_sessions u JOIN attribution a ON u.sessionid = a.sessionid group by user_id order by LTV desc ; Needs a full join. Wondering why cant we do a left outer join here. All the sessions should have complete data."See full answer

Aman M. - "Apoorva Tai is the best. Wash-off effect can be applied on switchback if 1-hour time-block is persisted with, where the first 10-15 minutes of a switchback is ignored"See full answer

shg - "(This was not search autocomplete based on prefix matching question.) First of all, please note :- The interviewer is not expecting you to get to the right answer in just 1 hr. These systems have been designed over months and improved over years and its impractical for anyone to expect you to get to the right answer in 1 hr. (There is no one single right answer). At the end, the interviewer (director level person) told me the same. What they are looking for is your thought process, getting from"See full answer

Julien C. - "👇 Your feedback is very much appreciated 👇 Defining metrics: Activation Mobile downloads New user registration Retention and Engagement Nb messages sent Average nb of contacts per user Nb groups Monetization CAC LTV ARPU MRR Prioritizing: What matters most for WhatsApp right now is Engagement. I would therefore prioritize these three: Nb messages sent Average nb of contacts per user Nb groups"See full answer

Katie - "Union−Find -We illustrate our basic approach to developing and analyzing algorithms by considering the dynamic connectivity problem. We introduce the union−find data type and consider several implementations (quick find, quick union, weighted quick union, and weighted quick union with path compression). Finally, we apply the union−find data type to the percolation problem from physical chemistry. Analysis of Algorithms -The basis of our approach for analyzing the performance of algorithms is th"See full answer

Mahesh G. - "Clarifying questions: Is it before pre launch or for it's current business? > Pre launch Goals > Adoption, engagement Can briefly talk about: What the company cares about? (Uber & Uber Eats) Uber: Redefining the world moves for the better Uber Eats: Make eating well effortless at any time, for anyone, anywhere Expectations of consumers and restaurants/Stores Consumers: At one's comfort, one wants the groceries or/and food to be delivered to their"See full answer

Beginner P. - "Skeleton: Mission Metrics to improve User segments & the segment with most impact User journey Pain points and opportunities Features/solutions & prioritization Starting with Twitter's mission, "the power to create and share ideas & information without any barriers", we are looking to empower people to be both consumers and generators of content. Are these users interacting with Twitter on the website or the mobile app? [Clarifying with interviewer, who answers mobile app.] "See full answer