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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
Stripe logo
Stripe
Medium
Software Engineer Locked

Process multi-currency payments with fees

This question evaluates a software engineer's competency in precise integer arithmetic and rounding semantics, multi-currency FX conversion with basis...

Coding & Algorithms
9
1
101 people solved
Nov 2, 2025
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Design a simple greeting-card web app

This question evaluates a candidate's ability to design a minimal web application architecture for an MVP greeting-card service, covering frontend/bac...

System Design
8
0
107 people solved
Feb 11, 2026
OpenAI logo
OpenAI
Easy
Software Engineer Locked

Simulate a Turn-Based Two-Player Game

This question evaluates API design, state management, move validation, board representation, and correctness guarantees for a turn-based game simulato...

Coding & AlgorithmsSimulation & State MachinesLow-Level Design (OOP)
20
0
133 people solved
Feb 13, 2026
Robinhood logo
Robinhood
Medium
Software Engineer

Design a Task Scheduler and Executor

Design a Task Scheduler and Executor Design a service that accepts tasks for future or recurring execution and dispatches them to workers. Constraints...

System DesignJob Scheduling & WorkflowsDistributed Transactions & Idempotency
16
1
132 people solved
Apr 21, 2026
Airbnb logo
Airbnb
Medium
Data Scientist Locked

Describe How You Use SQL in Data Science Work

Prepare to explain how you use SQL in day-to-day data science work, from defining analysis populations and joining data to building experiment or coho...

Data Manipulation (SQL/Python)SQLData Quality & Validation
6
0
74 people solved
Jul 8, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Prevent Duplicate Request Processing

A client accidentally sends the same network request twice, for example because the user double-clicked a button, the client retried after a timeout, ...

System DesignDistributed Transactions & IdempotencyDistributed Coordination
34
0
250 people solved
Apr 4, 2026
xAI logo
xAI
Hard
Machine Learning Engineer Locked

Implement Distributed Matrix Multiplication

This question evaluates distributed systems and parallel algorithm skills, specifically distributed matrix multiplication, data partitioning (row- and...

Coding & Algorithms
10
0
92 people solved
Jan 28, 2026
Shopify logo
Shopify
Medium
Data Scientist

Diagnose Weekly Session Conversion Anomalies

You are a Data Scientist supporting an e-commerce platform. You receive a weekly time-series dashboard covering the past three years. The dashboard in...

Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels
21
0
176 people solved
Apr 3, 2026
Chicago Trading Company logo
Chicago Trading Company
Medium
Software Engineer

Implement a Constant-Time Simple Moving Average

Implement a Constant-Time Simple Moving Average Implement a top-level operation runner for a simple moving average over a fixed-size window of the mos...

Coding & Algorithms
3
0
42 people solved
Apr 20, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Software Engineer Locked

Implement a Simplified std::vector with Manual Memory Management

This question evaluates a candidate's grasp of low-level memory management in C++, including the distinction between raw allocation and object constru...

Software Engineering Fundamentals
12
0
85 people solved
Jun 15, 2026
Moveworks logo
Moveworks
Medium
Software Engineer

Find a secret word via match feedback

Word Guessing Game (Mastermind-style) You are given a list of unique candidate words wordlist. All words have the same length L and contain only lower...

Coding & AlgorithmsGreedy
13
0
266 people solved
Dec 15, 2025
Applied Intuition logo
Applied Intuition
Easy
Software Engineer

Group duplicate files by content

Problem You are given a list of files in a filesystem. Each file has: - a full path (string) - a file size in bytes (integer) - file contents (concept...

Coding & Algorithms
7
0
68 people solved
Feb 12, 2026
Qube Research & Technologies logo
Qube Research & Technologies
Hard
Data ScientistIntern

Implement and Tune KNN Classifier

You are given two CSV files for a three-class leaf-classification task. - train.csv contains three numeric feature columns: feature_0, feature_1, and ...

Machine Learning
6
0
53 people solved
Jan 12, 2026
Optiver logo
Optiver
Medium
Quantitative Trader

Quant Trading Game: Expected-Value Betting and Market Making on Coins, Dice, and Cards

Quant Trading Game: Expected-Value Betting and Market Making on Coins, Dice, and Cards You are playing a live, 30-minute trading game against the inte...

Machine Learning
9
0
117 people solved
Jul 25, 2025
DoorDash logo
DoorDash
Medium
Data ScientistSenior+ Locked

Evaluate a Bike-Delivery Pilot with Marketplace Metrics

A marketplace experimentation case about launching a bike-delivery option. Candidates select a city, quantify parking friction, define business and op...

Analytics & Experimentation
8
0
69 people solved
Jul 18, 2026
Atlassian logo
Atlassian
Medium
Software Engineer

Find nearest common manager for multiple employees

Given an organizational hierarchy modeled as a rooted tree, build the tree from (employee, manager) pairs and implement a function that, for k ≥ 2 emp...

Coding & AlgorithmsTrees
20
0
235 people solved
Jul 31, 2025
ZipHQ logo
ZipHQ
Hard
Software Engineer

Find shortest path on infinite grid

You are given an infinite 2D grid with integer coordinates. From a cell (x, y) you may move in 4 directions (North/South/East/West) by 1 cell per move...

Coding & AlgorithmsGraphs
64
0
515 people solved
Mar 11, 2026
Two Sigma logo
Two Sigma
Medium
Software Engineer

Implement a Hash Map with Separate Chaining and Resizing

Implement a hash map data structure from scratch, without using any built-in hash table types from your language's standard library (no dict, HashMap,...

Coding & Algorithms
8
0
79 people solved
Aug 26, 2025
Stripe logo
Stripe
Easy
Data Scientist

Match payments to invoices by memo or amount

Scenario You are building a small reconciliation tool that matches payments to invoices. Data structures Assume you are given: - invoices: a list of i...

Coding & AlgorithmsData Cleaning & WranglingArrays & Strings
26
0
188 people solved
Oct 25, 2025
Anthropic logo
Anthropic
Hard
Software Engineer

Explain projects and handle AI-safety conflicts

Behavioral / Hiring Manager round 1. Walk through 1–2 key projects from your resume. - What was the goal and why did it matter? - What was your ...

Behavioral & LeadershipEthics & ResponsibilityProject Deep Dive
40
0
383 people solved
Nov 19, 2025
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