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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.0k
Companies
570
Updated
10.05.2026
12.0k Questions 570 Companies10.05.2026
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
Shopify logo
Shopify
Medium
Data Scientist

Assess and push back on ideology-heavy interviews

Scenario You are interviewing for a Data Scientist role. Twenty‑four hours before your HR call, the recruiter emails five links (CEO philosophy + inte...

Behavioral & Leadership
8
0
77 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Medium
Data Scientist

Estimate QR Code Scan Rate for Super Bowl Ad

Estimate QR Code Scan Rate for Super Bowl Ad Forecasting a QR-Code Super Bowl Ad Funnel Context You are advising a brand running a QR-code Super Bowl ...

Analytics & Experimentation
3
0
48 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Data Scientist

Quantify launch decision with tests and guardrails

You will formalize the statistical decision rules for the Instagram button experiment described above. Given: baseline exploration rate (p0) = 0.15 pe...

Statistics & Math
4
1
54 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Data Scientist

Investigating Correlation Between Ad Visits and Reports

Scenario You are on the analytics team at a large social media platform. A positive correlation has been observed between the number of page visits to...

Analytics & Experimentation
7
0
73 people solved
Jun 22, 2025
Apple logo
Apple
Medium
Software Engineer

Compute top three scores per student

Compute top three scores per student You are given a list of (student_id, score) records. Return, for each student, their highest three scores in desc...

Coding & AlgorithmsHeaps & Priority Queues
9
0
105 people solved
Aug 9, 2025
DoorDash logo
DoorDash
Hard
Software Engineer

Design notification and project architecture

Design notification and project architecture System Design: Multi-Channel Notification Platform Design a scalable Notification System that supports re...

System DesignSystem Design FundamentalsFault Tolerance & Failover
12
0
139 people solved
Aug 4, 2025
ByteDance logo
ByteDance
Medium
Product Manager

Assess TikTok's ecosystem

Evaluate TikTok's ecosystem as a multi-sided product platform. Consider the flywheel across viewers, creators, advertisers, and merchants. Assess the ...

Product Design & StrategyProduct StrategyGrowth & Monetization
9
0
69 people solved
Apr 19, 2025
Meta logo
Meta
Hard
Data Scientist

Analyze Data to Boost Group Post Comment Rates

Analytics Plan to Increase Group Post Comment Coverage A social shopping platform wants to increase the percentage of group posts that receive at leas...

Analytics & Experimentation
71
0
189 people solved
Jul 12, 2025
Bitkernel logo
Bitkernel
Medium
Software Engineer

Classify concurrency anomaly between two transactions

Two transactions T1 and T2 run concurrently and access the same data item A. Their operations (in order of time) are: 1. T1 reads A = 100. 2. T2 reads...

Software Engineering Fundamentals
2
0
46 people solved
Oct 24, 2025
Disney logo
Disney
Medium
Software Engineer Locked

Build a sortable, searchable movie list UI

This question evaluates frontend engineering competencies such as UI component architecture, state management, asynchronous data fetching, client-side...

Software Engineering FundamentalsReact & UI FrameworksState Management
10
0
96 people solved
Jan 22, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Find Minimum Time Across a Grid

This question evaluates algorithm design and problem-solving skills related to grid-based reachability with time-dependent constraints, assessing the ...

Coding & Algorithms
5
0
50 people solved
Mar 18, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Solve Several Algorithm Problems

This collection evaluates proficiency in string processing (longest palindromic substrings), graph connectivity and union‑find style concepts for 2D p...

Coding & Algorithms
5
0
72 people solved
Mar 17, 2026
Meta logo
Meta
Medium
Software Engineer

Solve grid path and top‑k frequency

Part A — Grid Reachability with Obstacles: Given an m×n matrix of 0s and 1s where 0 indicates a passable cell and 1 indicates a blocked cell, starting...

Coding & Algorithms
7
0
52 people solved
Sep 6, 2025
Nuro logo
Nuro
Hard
Backend Engineer

Implement BFS and a Job Scheduler

The interview report described two coding questions: grid reveal with BFS and a concurrent periodic job scheduler. Constraints & Assumptions - For the...

Coding & AlgorithmsGrids & MatricesConcurrency
12
0
117 people solved
Feb 4, 2025
EY logo
EY
Medium
Data Scientist

Demonstrate domain impact with metrics

Behavioral Prompt: Impactful Initiative in Financial Services (Data Science) Context You will describe a high-impact initiative you delivered in banki...

Behavioral & Leadership
5
0
41 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Find when failures started in log stream

This question evaluates understanding of monotonic sequences and search algorithms (such as binary search), along with algorithmic reasoning about cor...

Coding & AlgorithmsBinary Search
5
0
96 people solved
Jan 22, 2026
Zipline logo
Zipline
Medium
Software Engineer

Implement a Maximum-Tracking Stack

Design a stack-like data structure that supports the following operations efficiently: - push(x): Push integer x onto the stack. - pop(): Remove and r...

Coding & Algorithms
2
0
31 people solved
Jan 15, 2026
Meta logo
Meta
Medium
Data Scientist

Track Metrics to Measure Push Notification Quality

Track Metrics to Measure Push Notification Quality Scenario A consumer mobile app sends push notifications to drive user engagement. You need to evalu...

Analytics & Experimentation
23
0
51 people solved
Aug 4, 2025
Thumbtack logo
Thumbtack
Medium
Data Scientist

Choose clustering vs regression; explain KNN

When would you use clustering vs. regression on a business problem with partially labeled outcomes? Specify the decision criteria (label availability,...

Machine LearningUnsupervised LearningCommunication & Stakeholders
7
0
91 people solved
Oct 13, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

Decide best email variant using stratified A/B analysis

Stratified A/B Test Across Two Strata (Week/Location) You ran an email A/B test across two strata defined by week/location. Each user receives at most...

Analytics & ExperimentationExperiment Analysis & ReadoutHypothesis Testing
8
0
92 people solved
Oct 13, 2025
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