Uber Interview Questions

Uber Coding & Algorithms Interview Questions

Practice 303 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.

303 Questions 1 Company07.03.2026
Showing 20 results
Role
Uber logo
Uber
Medium
Data ScientistNew Grad Locked

Compute CDF from a PDF Function

This question evaluates a candidate's skills in numerical integration, applied numerical methods, and probability/statistics by requiring construction...

Coding & Algorithms
3
0
41 people solved
Apr 30, 2026
Uber logo
Uber
Medium
Software Engineer

Find Earliest Full Connectivity Timestamp

You are given: - A list of all user IDs in a ride-sharing system. - A chronological text log of ride-sharing events. Each relevant event contains a ti...

Coding & Algorithms
1
0
14 people solved
Apr 26, 2026
Uber logo
Uber
Medium
Software EngineerSenior+

Find the First Unique IP

You are processing a chronological stream of server hit records. Each record contains an IP address as a string. Design and implement a component that...

Coding & Algorithms
19
0
186 people solved
Apr 23, 2026
Uber logo
Uber
Medium
Machine Learning Engineer

Implement a Referral Revenue Tracker

Implement an in-memory revenue tracking system for customers in a referral network. Each customer has their own direct revenue. A customer may also ha...

Coding & Algorithms
7
0
77 people solved
Apr 19, 2026
Uber logo
Uber
Medium
Machine Learning EngineerSenior+

Find a Black-Box Convex Function Minimum

You are given access to a black-box function F(x): each call returns the function value at a real number x. You are also given a search interval [a, b...

Coding & Algorithms
0
0
9 people solved
Apr 19, 2026
Uber logo
Uber
Medium
Software Engineer

Build a QuadTree From a Grid

Implement a compressed QuadTree for a square grid. You are given an n x n grid of values, where n is a power of two. The values are not limited to bin...

Coding & Algorithms
0
0
7 people solved
Apr 18, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Determine Whether Queries Can Zero Array

This question evaluates understanding of range-based array operations and feasibility under bounded per-index decrements, testing skills in interval r...

Coding & Algorithms
2
0
26 people solved
Apr 17, 2026
Uber logo
Uber
Medium
Software EngineerNew Grad Locked

Determine Whether Queries Can Zero Array

This question evaluates competency in array manipulation, range updates, and feasibility under constraints, focusing on reasoning about sequential int...

Coding & Algorithms
3
0
50 people solved
Apr 17, 2026
Uber logo
Uber
Hard
Software Engineer

Determine Whether a Word Exists in a Character Grid

Given a 2D character grid and a word, return whether the word can be formed by moving horizontally or vertically between adjacent cells without reusin...

Coding & Algorithms
0
0
12 people solved
Apr 17, 2026
Uber logo
Uber
Medium
Machine Learning Engineer

Find First Local Minimum

Given an integer array nums, find the index of the first local minimum. A local minimum is an element that is smaller than its immediate neighbors: - ...

Coding & Algorithms
3
0
20 people solved
Apr 17, 2026
Uber logo
Uber
Hard
Software Engineer

Maintain the First Value That Appears Exactly Once

Design a data structure that maintains a stream of integers and returns the first value that appears exactly once. Implement: `python class FirstUniqu...

Coding & Algorithms
0
0
1 people solved
Apr 17, 2026
Uber logo
Uber
Medium
Software EngineerSenior+

Find Any Available Meeting Room

You are given multiple meeting rooms. For each room, the existing bookings are represented as a list of non-overlapping time intervals sorted by start...

Coding & Algorithms
9
0
55 people solved
Apr 16, 2026
Uber logo
Uber
Medium
Data ScientistSenior+

Find the Next Larger Palindrome

Given a positive integer n, return the smallest integer strictly greater than n whose decimal representation is a palindrome. A palindrome reads the s...

Coding & Algorithms
2
0
24 people solved
Apr 10, 2026
Uber logo
Uber
Hard
Software Engineer

Simulate and Construct Tournament Rankings

You are given a single-elimination tournament represented by an array of ranks. The array is a permutation of the integers 1..n, where a smaller numbe...

Coding & Algorithms
1
0
13 people solved
Apr 9, 2026
Uber logo
Uber
Medium
Software Engineer

Solve two interview coding problems

The interview included two coding problems. Problem 1: Find valid robot locations in a grid You are given a 2D grid containing empty cells and obstacl...

Coding & Algorithms
4
0
33 people solved
Apr 8, 2026
Uber logo
Uber
Medium
Software Engineer

Solve Balanced Permutations and Tree Reversals

You have 90 minutes to solve the following two independent coding problems. Problem 1: Balanced Prefix Values in a Permutation You are given a permuta...

Coding & Algorithms
10
0
111 people solved
Apr 3, 2026
Uber logo
Uber
Hard
Software Engineer

Solve Knight and Reversal Problems

The online assessment contained two coding problems: 1. Generalized knight shortest path: Given an integer n, consider an n x n chessboard with coordi...

Coding & Algorithms
17
0
114 people solved
Apr 2, 2026
Uber logo
Uber
Hard
Software Engineer Locked

Solve two online assessment problems

This two-part prompt evaluates algorithmic problem-solving skills: the first problem tests optimization under index-based movement and number-theoreti...

Coding & Algorithms
12
0
122 people solved
Mar 19, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Find the First Unique Log

This question evaluates a candidate's ability to analyze and implement efficient data-processing and frequency-detection strategies on ordered string ...

Coding & Algorithms
3
0
48 people solved
Mar 4, 2026
Uber logo
Uber
Medium
Machine Learning Engineer

Solve DFS grid and keypad problems

You may be asked to solve one or more DFS/backtracking problems: 1. Grid connectivity problem: Given an m x n grid where 1 represents land and 0 repre...

Coding & Algorithms
17
1
138 people solved
Mar 1, 2026

Frequently Asked Questions

How hard are Uber interview questions?
Uber interview questions range from moderate to very challenging depending on role and level. Software Engineer loops emphasize data structures, algorithms and system-design problems that often require multi-step solutions and production tradeoffs, so expect mid-to-hard coding and design tasks. Data Scientist interviews skew toward analytics, experimentation and marketplace judgment with case-style product questions that reward rigorous causal thinking. Machine Learning Engineer rounds mix implementation and ML-system design, and TPM questions focus on program delivery and stakeholder tradeoffs. Preparation quality and interview level (junior vs senior) are the main determinants of perceived difficulty.
What is Uber's interview process and which roles ask these question types?
The typical Uber hiring sequence starts with a recruiter screen, followed by one or two technical phone or take-home assessments for some roles, then an onsite or virtual loop of four to six interviews and a hiring-committee review. Software Engineer rounds concentrate on coding, online assessment problems and system design. Data Scientist interviews emphasize SQL, experiments, product-analytics cases and behavioral ownership. Machine Learning Engineer interviews add ML model implementation and productionization questions. Technical Program Manager interviews focus on cross-functional program examples and behavioral leadership. Timelines usually span three to six weeks.
How long should I prepare for an Uber interview and how should I structure my timeline?
Plan your preparation based on role and current skill level. For Software Engineer positions allocate six to twelve weeks focusing on timed coding practice, mock interviews and system-design case work. Data Scientist candidates should budget three to six weeks prioritizing SQL, experimentation, product-case practice and clear storytelling about impact. Machine Learning Engineers need four to eight weeks combining model implementation, systems design and coding. TPM candidates can prepare in two to four weeks concentrating on program examples and stakeholder communication. Include final-week full mock loops and a review of role-specific Uber product scenarios.
Which specific subtopics should I focus on for each position at Uber?
For Software Engineers concentrate on algorithmic patterns seen in past Uber questions: BST kth-smallest, graph and knight problems, two online-assessment algorithm tasks, queue design for pickup-area driver matching, and product-oriented designs like global nearby-restaurant search and trade-off-driven design changes. Data Scientists should drill A/B testing, causal inference, cold-start rating models, marketplace evaluation (driver acceptance, membership and priority delivery impact) and translating analyses into action. Machine Learning Engineers should practice implementing attention, linear and logistic regression, feed ranking and ML-system tradeoffs including pickup-location optimization. TPMs should rehearse unclear-address resolution and cross-product comparisons with crisp ownership stories.
What standout tips and common pitfalls should I know before interviewing at Uber?
Standout tips: always clarify requirements and constraints up front, structure answers around measurable metrics and business impact, and narrate tradeoffs between latency, cost and accuracy. Use concrete examples from marketplace contexts and quantify outcomes when possible. For coding, write clean, testable code and discuss complexity and edge cases. Common pitfalls include skipping assumptions, failing to justify metric choices in product/analytics problems, neglecting production implications for ML designs, and overfitting to toy solutions instead of addressing scale and reliability. End with clear next steps or monitoring plans to show ownership.

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