Top Uber Interview Questions

Chethan N. - "Build a counter using queue, one queue per service ("a", "b") and one with just timestamps to get the overall load. Build rate limiter service using the counter and interviewer asked if there rate limiter might use a different instance of a counter"See full answer

Exponent - "Although it's not totally obvious, this is a Strategy Question, which asks you to justify business decisions at a high level. First, let's provide a few reasons why Display Ads are bad, and then propose an alternative solution. > There are a few reasons why display ads are a bad idea. I'll go into them in-depth shortly, but in summary, display ads degrade the user experience and monetize poorly, which has all sorts of cascading effects. Loss of control > Typically, display ads are run thr"See full answer

Exponent - "This is a Strategy Question, which asks you to justify high-level business decisions and strategy. There's no set formula, but we recommend proposing at least three different reasons to answer the question. Let's go over one possible solution: > I think there's three major ways Uber was impacted:Hiring uncertainty > A focus on Eats > Assisting local restaurants > Hiring uncertainty > I think one of the major ways Uber, and any tech business, was affected is in hiring new talent. I've hea"See full answer

Ramachandra N. - " def closest_palindrome(n: str) -> str: """ Finds the closest palindromic number to n (excluding itself). Assumptions: If two palindromes are equally close, return the smaller one. n is a positive integer represented as a string. Time Complexity: O(1) Space Complexity: O(1) """ length = len(n) num = int(n) Helper to build palindrome from a prefix def makepalindrome(prefix: int, isodd_length: bool) -> int: s = str(prefi"See full answer

Katie O. - "When originally trying to launch XYZ product, a stakeholder wanted to rollout an additional requirement for agents that would have been redundant. I provided light pushback and context regarding the scale of the lift and technical resources required to initiate their request. Once I described the complexity of their request & potential strain on resources, we agreed to brainstorm alternative solutions. I collaborated with cross-functional teams to create an automated solution, leading to XYZ% in"See full answer

Luke P. - "A full stack developer could be summarized as the person who both writes the APIs and consumes the APIs. They are familiar with Databases/Data-layer services, middle-layer/application services and business logic, and finally familiar with the consumers whether front-end applications/UIs or other systems. They can understand the trade-offs up and down the stack, where to adjust along the service-call-path. Ideally they are comfortable programming both async calls (front end javascript promises, e"See full answer

Asish B. - "The supply and demand for Uber Eats may be greatly impacted in the near future by the two macroeconomic factors listed here. Each trend links to large alterations in consumer behavior, labor markets, and cost structures that can cascade across the delivery ecosystem. Changes in Consumer Spending and Inflation Growing Costs and Fees for Food: Customers may order fewer deliveries or choose less expensive goods if food prices, restaurant running costs, or delivery fees increase as a result of"See full answer

Anzhe M. - "Not my answer, but rather the details of this question. It should include the following functions: int insertNewCustomer(double revenue) -> returns a customer ID (assume auto-incremented & 0-based) int insertNewCustomer(double revenue, int referrerID) -> returns a customer ID (assume auto-incremented & 0-based) Set getLowestKCustomersByMinTotalRevenue(int k, double minTotalRevenue) -> returns customer IDs Note: The total revenue consists of the revenue that this customer bring"See full answer