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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Jain Global logo
Jain Global
Medium
Data Engineer Locked

Design and Debug a Point-in-Time Backtest Data Pipeline

Practice diagnosing a point-in-time financial backtest pipeline, from identifier resolution and vendor backfills to stale data, outliers, and look-ahe...

System Design
5
0
50 people solved
Jul 26, 2026
LinkedIn logo
LinkedIn
Medium
Data Scientist Locked

Derive mean and variance of x̄

This question evaluates understanding of expectation, variance, covariance structure, and how dependence between observations affects the precision of...

Statistics & MathSampling & EstimationProbability
7
0
112 people solved
Feb 19, 2026
Amazon logo
Amazon
Medium
Software Engineer

Compute minimum passes to collect numbers

Question You are given an array shelf of n distinct integers that is a permutation of 1…n. Starting with target = 1, you repeatedly scan shelf from le...

Coding & Algorithms
79
0
255 people solved
Jul 29, 2025
StubHub logo
StubHub
Medium
Software Engineer Locked

Design a Global Marketing Email Platform

This question evaluates a candidate's ability to design a scalable, reliable distributed system for global marketing email delivery, encompassing time...

System DesignJob Scheduling & WorkflowsMessaging & Event-Driven
21
0
199 people solved
Jan 21, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer

Explain LLM tuning and transformer basics

Answer the following machine learning questions: - Describe a project where you fine-tuned a large language model or another large foundation model. E...

Machine LearningFine-Tuning & Alignment TechniquesTransformers & Attention
14
0
122 people solved
Jan 30, 2026
Attentive logo
Attentive
Medium
Software Engineer Locked

Design Storage for a Flexible Metrics Monitoring System

Design persistence for a metrics monitoring system by working backward from concrete query patterns. Choose record identity, partitions, indexes, retr...

System Design
9
1
79 people solved
Jul 26, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Trade Short-Term Benefit for Long-Term Success

Question Tell me about a time you gave up a short-term benefit to improve the likelihood of long-term success. What did you sacrifice, how did you jus...

Behavioral & Leadership
2
0
33 people solved
Mar 12, 2026
Stripe logo
Stripe
Medium
Software Engineer

Implement multi-part cost calculator

You are given a price catalog and a list of orders. Implement the following in any language (Python examples acceptable): Inputs - price_catalog: mapp...

Coding & Algorithms
32
0
239 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Set second tree values by subtree sums

Given the roots of two complete binary trees T1 and T2 that have identical structure and the same number of nodes, replace each value in T2 with the s...

Coding & AlgorithmsTrees
20
1
161 people solved
Sep 6, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Print Sentences as Table

Implement a function that formats a list of sentences as a bordered table. Given: - sentences: a list of strings - width: the fixed content width of e...

Coding & Algorithms
17
1
111 people solved
Feb 9, 2026
Amazon logo
AmazonBloombergMeta

Also asked at Meta, Nokia, Garmin

Easy
Software Engineer

Buy All Items Under a Two-Paid One-Free Offer

Problem A shop lets you take one candy free for every two candies you pay for, provided the free candy costs no more than either paid candy. Given the...

Coding & AlgorithmsGreedySorting
0
0
8 people solved
DocuSign logo
DocuSign
Medium
Software Engineer

Design paginated list UI and pagination API

Scenario You are building a web page that displays a list of items (e.g., posts, products, or users). The list must be paginated, and users can click ...

System DesignAPI DesignUI Components & Accessibility
12
0
212 people solved
Oct 14, 2025
Anthropic logo
Anthropic
Medium
Software EngineerSenior+ Locked

Discuss Leadership, Motivation, and AI Safety Values

Discuss leadership, mentoring, career motivation, AI safety, and a real values conflict with specific evidence. The answer should balance responsible ...

Behavioral & LeadershipMotivation & Fit
34
0
230 people solved
Jul 4, 2026
Citadel logo
Citadel
Medium
Site Reliability Engineer

Design Safe Configuration and Deployment for Hundreds of Services

Design Safe Configuration and Deployment for Hundreds of Services Replace hand-edited files, environment variables, NFS, and SSH scripts for 200-plus ...

System Design
11
0
93 people solved
May 8, 2026
Meta logo
Meta
Medium
Software Engineer

Design a YouTube/Netflix video platform

Design a video platform similar to YouTube/Netflix. Requirements: - Upload videos (for YouTube-like) and/or ingest catalog (for Netflix-like). - Trans...

System Design
5
0
87 people solved
Feb 25, 2026
Google logo
GoogleAmazonBloombergMicrosoft

Also asked at Bloomberg, Microsoft

Medium
Software Engineer

Place Fruit Types in the Leftmost Eligible Baskets

Problem You are given two integer arrays, fruits and baskets, each of length n. The value fruits[i] is the quantity of fruit type i, and baskets[j] is...

Coding & AlgorithmsTreesSimulation & State Machines
0
0
8 people solved
Spotify logo
Spotify
Hard
Machine Learning Engineer Locked

Predict Next-Week Streaming Engagement at Event Scale

Design an ML system that predicts whether a streaming user will be active next week. Connect data and model choices to serving architecture, latency a...

ML System Design
5
0
53 people solved
Jul 31, 2026
Two Sigma logo
Two Sigma
Hard
Data Scientist Locked

Derive correlation bounds and omitted-variable bias

This question evaluates understanding of multivariate correlation structure and linear regression properties, focusing on feasible ranges and construc...

Machine LearningRegression & Statistical ModelingProbability
22
0
163 people solved
Jan 6, 2026
Verkada logo
Verkada
Medium
Software Engineer Locked

Design real-time per-status device counts

This question evaluates a candidate's ability to design scalable, fault-tolerant real-time aggregation systems that produce per-minute status counts, ...

System DesignBatch & Stream ProcessingData Ingestion & CDC
13
0
237 people solved
Jan 19, 2026
Uber logo
Uber
Medium
Software Engineer

Simulate robot on grid with obstacles

Simulate robot on grid with obstacles A robot starts at (0, 0) on an unbounded integer grid. You are given a sequence of commands consisting of charac...

Coding & AlgorithmsSimulation & State Machines
11
0
132 people solved
Jul 15, 2025
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