Uber Data Scientist Interview Questions
If you’re preparing for Uber Data Scientist interview questions, expect a mix that reflects Uber’s massive, time-sensitive two‑sided marketplace: interviewers evaluate your ability to turn large, temporal datasets into actionable business decisions under operational constraints. Distinctive elements include heavy SQL usage (especially window functions and time‑based aggregations), experimentation and causal reasoning for A/B testing, product‑analytics cases that probe metric design and root‑cause analysis, plus Python and occasional machine‑learning discussions. Interviewers look for clear problem framing, pragmatic tradeoffs, and the ability to communicate results to cross‑functional partners. For interview preparation focus on three things: practice writing concise, correct SQL for real‑world time‑series problems; rehearse product analytics and experiment design scenarios with quantified tradeoffs; and polish behavioral stories that show ownership and collaboration. Simulate live coding on plain editors or CoderPad, time yourself on case problems, and prepare to explain assumptions and next steps rather than chasing perfect answers. This approach helps you demonstrate the speed, judgment, and impact Uber typically expects from its data scientists.

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Apply instrumental variables under interference
IV estimation for a ride‑sharing feature when A/B testing is infeasible due to interference Context You need to estimate the causal effect of a new ri...
Design an experiment with marketplace network effects
Causal Experiment Design for a Two‑Sided Marketplace with Interference You are designing a causal experiment for a new networked product in a two‑side...
Design metrics and A/B test for maps and ETA
Context You work on Uber’s driver app. Drivers can navigate using either Google Maps or Uber Maps. Separately, Uber shows riders an estimated time of ...
Transform DataFrame and compute diff-in-diff
You are given a pandas DataFrame df with the following columns: - unit_id (string): entity identifier (e.g., user, city, driver) - group (string): eit...
Evaluate Marketplace Changes
You are a marketplace data scientist at a mobility and delivery platform. Discuss how you would evaluate the following product and algorithm changes: ...
Derive a CDF from a PDF
During a first-round Data Scientist interview, you are asked a coding-and-statistics question: You are given a valid probability density function f(x)...
Diagnose location-sorted recommender causing revenue drop
Eats recommendations were changed to rank items primarily by distance to the user; after launch, add-to-cart rate rose but revenue per session fell. D...
Compute A/B sample size under clustering
A/B Test Sample Size With Unequal Allocation, Clustering, and Attrition Context You are planning a two-arm signup A/B test (binary outcome: convert vs...
Analyze Cancellation Change with Statistics
A/B change in cancellation rate (before vs after) Context: You are evaluating a small product tweak intended to reduce cancellations. Treat each trip ...
Compute ETA shift and conversion uplift
Use PostgreSQL (SQL) and brief Python pseudocode. Assume 'today' is 2025-09-01. Schema: - trips(trip_id BIGINT, request_ts TIMESTAMP, city_id INT, rid...
Evaluate impact without randomized experiments
Estimating a Promotion's Causal Effect Without an Experiment Context You need to estimate the causal impact of a marketing promotion on engagement (e....
Navigate urgency, priorities, and conflict
Behavioral & Leadership: Ambiguity, Dependencies, and Execution Under Pressure You will describe one real project where you faced high ambiguity and c...
Design an A/B test; choose Z vs T
A/B Test on a Signup Funnel: Sample Size, Test Choice, Sequential Design, and Causal Plan Context You are planning a two-variant A/B test on a signup ...
Determine Sample Size for Promotion Campaign A/B Test
Determine Sample Size for Promotion Campaign A/B Test Scenario Uber plans to launch a promotion campaign and wants to evaluate its effectiveness with ...
Design promo experiment and explain correlation
You work on a ride-hailing marketplace (drivers + riders). Answer the following analytics and experimentation questions. 1) Interpret a surprising cor...
Improve Estimated Time of Arrival for Uber Riders
Improve Estimated Time of Arrival for Uber Riders Scenario Ride-hailing platform: understanding and improving the Estimated Time of Arrival (ETA) show...
Design station experiment with interference and rush-hour spillovers
Experiment Design Under Interference for an In‑Station Ordering Pilot Context (Completed) You are evaluating two competing in‑station ordering feature...
Explain and validate A/B test assumptions
A/B Test Validity: Core Assumptions, Violations, Diagnostics, and Mitigations You are designing and evaluating an online A/B test for a large, multi-s...
Write SQL for active counts and YTD top driver
Given the following schema and sample data, write SQL to: (a) return the total count of active riders and active drivers on the platform; (b) return t...
Design airport dispatch with ETA uncertainty
You control airport pickups with streaming ETAs for arriving flights and live driver locations/queues. Design an online dispatch algorithm that minimi...