Uber Interview Questions
Practice 290 real Uber interview questions for 2026. Covers top categories — Coding & Algorithms, Analytics & Experimentation, Machine Learning, Behavioral & Leadership, Statistics & Math — across Software Engineer, Data Scientist, Machine Learning Engineer, and Technical Program Manager roles. Real questions from actual interviews with detailed solutions, focused guidance, and concrete interview preparation so you can practice the exact problem types Uber asks. Expect a coding-heavy loop for software engineering candidates: timed algorithm problems, online-assessment style OAs, and system-design tasks. For Software Engineer roles the recurring technical themes here are algorithm puzzles (kth-smallest-in-BST, knight/grid and reversal problems, prime-ending path counts), OA-style coding questions, and product-oriented design prompts such as a pickup-area driver queue and global nearby-restaurant search. Data Scientist questions center on membership/discount experiments, cold-start restaurant ratings and their launch evaluation, driver-acceptance modeling, and marketplace-impact analyses. Machine Learning Engineer prompts focus on completion-rate gaps, implementing attention and regression models, feed-ranking and restaurant-recommendation design, and pickup-location optimization. TPM items emphasize delivery-address fixes, competitive product comparisons, and leadership stories. Prepare by timing practice coding, rehearsing marketplace case studies, building short model write-ups, and polishing STAR examples for behavioral rounds.
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Move zeros to the front
You are given an integer array nums. Reorder the array in place so that all 0 values are moved to the beginning of the array, while preserving the rel...
Determine Whether Queries Can Zero Array
You are given an integer array nums of length n and a list of range queries queries, where each query is of the form [l, r, val]. For a query [l, r, v...
Measure YouTube Ad Effectiveness
Uber is running marketing ads on YouTube and wants to understand whether the campaign creates incremental business value, not just whether users watch...
Compute currency conversion via graph search
Given a list of currency pairs, e.g., [('USD','CAD'), ('CAD','EUR'), ...], and a parallel list of conversion ratios [1.1, 1.2, ...] where ratio r mean...
Solve vault rate and subset-sum
1) Robber vaults rate: You are given an array vaults of positive integers where vaults[i] is the amount in the i-th vault, and an integer h (hours). I...
Implement 1D convex minimization in Python
1D Black-Box Convex Minimization (Gradient-Free) Task Implement in Python an algorithm to minimize a 1D convex function F(x) over a closed interval [a...
Count subarrays with at least k fruit pairs
Given an integer array nums where each value denotes a fruit type, and an integer k: For any subarray, define a 'pair' for fruit value v if its freque...
Handle invalid Lisp expression parsing
Question LeetCode 736. Parse Lisp Expression – Given a string representing a Lisp-like expression containing let/add/mult operations and variable bind...
Define market-only rider experience metrics
Market-only Rider Experience Metrics and Market Balance Index (MBI) You are designing a metric suite for a rides marketplace where "rider experience" ...
Maximize Minimum Scaled Value
You are given two integer arrays values and costs of the same length n, and a non-negative integer totalCost. For each index i, you may choose an inte...
Produce a valid deployment order
You are given N services and a list of dependency pairs (A, B) meaning service B must be deployed before service A. Compute any valid deployment order...
Implement uniform sampling in squares
Implement a class Square representing an axis-aligned square on the 2D plane that supports sampling a uniformly random point inside the square. Then e...
Solve minimum rate and subset sum
1) Minimum rate to finish vaults within a deadline: You are given an array vaults of positive integers representing the amount in each vault along a r...
Implement 2D word search variants and analyze complexity
Given an m x n grid of uppercase letters board and a string word, implement two related functions: ( 1) Fixed-direction search: Return true if word ap...
Find leftmost point of maximum brightness
You are given an array of lights, where each light is [p, r] representing a lamp centered at coordinate p on the real number line with radius r, illum...
Perform matrix Candy Crush elimination
Question Implement a function that, given an m × n integer matrix representing colored blocks (same integers = same color), performs one round of "Can...
Optimize Surge Notifications for Rideshare Drivers
Scenario A rideshare marketplace experiences airport demand spikes. When demand exceeds supply, the system can send surge-pricing push notifications t...
Enforce ordered execution across threads
Implement a class with three methods alpha(), beta(), and gamma() that may be called by three different threads in arbitrary order, but must print the...
Implement an expiring counter class
Expiring Counter (sliding time window) Design and implement an expiring counter that counts events in a recent time window. Requirements - You are giv...
Answer core behavioral questions
You are interviewing for a Senior Program Manager role at Uber. Prepare strong answers to these core behavioral questions: - Why Uber? - Why are you a...