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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k 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
Coinbase logo
Coinbase
Hard
Data Scientist

Build and evaluate a conversion prediction model

Predicting 7-Day Purchase After Email Send Context You are given a CSV where each row is a user–email send (or scheduled send/control), with columns: ...

Machine LearningML System DesignFeature Engineering
7
0
122 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Design a URL Shortener

This question evaluates a candidate's ability to design a scalable, highly available URL-shortening service, testing competencies in API design, short...

System Design
10
0
71 people solved
Mar 20, 2026
Meta logo
Meta
Medium
Software Engineer

Validate word abbreviation and reconcile two abbreviations

Validate word abbreviation and reconcile two abbreviations Implement a function isValidAbbreviation(word: string, abbr: string) that returns true if a...

Coding & Algorithms
5
0
58 people solved
Jul 15, 2025
Current logo
Current
Hard
Software Engineer

Design a metrics monitoring system

Design a metrics monitoring system System Design: Metrics Monitoring Platform Context Design a cloud‑native, multi‑tenant metrics monitoring system fo...

System DesignObservabilityBatch & Stream Processing
23
0
156 people solved
Jul 31, 2025
Coupang logo
Coupang
Medium
Software Engineer

Describe your proudest project and dive deep

Describe your proudest project and dive deep Behavioral Prompt: Project You’re Most Proud Of Context: Onsite software engineer behavioral interview. C...

Behavioral & LeadershipProject Deep DiveOwnership & Execution
6
0
123 people solved
Aug 7, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Develop Auto-Complete System for Dish Suggestions

Scenario Search-as-you-type needs dish suggestions with popularity scores. Question Build an auto-complete system using the given (string, score) tupl...

Coding & Algorithms
7
0
43 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Assess Demand for Group Video Chat

This question evaluates skills in product analytics, causal inference from observational data, demand estimation, survey design, and executive-level s...

Analytics & ExperimentationUser Research & DiscoveryProduct Strategy
8
0
84 people solved
Mar 14, 2026
Bridgewater logo
Bridgewater
Medium
Software Engineer Locked

Defend the Technical Details of a Project

Defend one project through a focused technical deep dive into its problem, architecture, request or data flow, and hardest implementation choices. Exp...

Behavioral & Leadership
1
0
32 people solved
Jul 8, 2026
Coinbase logo
Coinbase
Medium
Data ScientistSenior+

Compute 30-day power users and 7-day retention

Compute 30-day power users and 7-day retention You are interviewing for a Product/Risk Data Scientist role at a crypto exchange. Assume all timestamps...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
8
0
82 people solved
Mar 25, 2025
Google logo
Google
Hard
Product Manager

Project Leadership Deep Dive

Behavioral PM Onsite: End-to-End Project Leadership Deep Dive Choose one high-impact project you are proud of and walk through it end to end. Then add...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
16
0
115 people solved
Jul 4, 2025
Uber logo
Uber
Medium
Software Engineer

Implement uniform sampling in squares

Implement uniform sampling in squares Implement a class Square representing an axis-aligned square on the 2D plane that supports sampling a uniformly ...

Coding & AlgorithmsMath & Number TheoryProbability
7
0
89 people solved
Jul 15, 2025
Ngrok logo
Ngrok
Medium
Software Engineer

Generate Color Feedback for a Word Guess

Generate Color Feedback for a Word Guess Given an answer string and a guess of the same length, produce one color for each guessed character: - "green...

Coding & Algorithms
0
0
17 people solved
May 1, 2026
PayPal logo
PayPal
Medium
Machine Learning Engineer

Search a word in a grid

Given a 2D grid of characters and a target word, determine if the word can be traced by moving up, down, left, or right, using each cell at most once....

Coding & Algorithms
5
0
61 people solved
Sep 6, 2025
Cisco logo
Cisco
Easy
Software Engineer Locked

Longest Substring Without Repeated Characters

Return the leftmost longest contiguous substring whose characters are all unique. Handle empty input, ASCII and case-sensitive semantics, large string...

Coding & Algorithms
5
0
52 people solved
Jul 16, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Validate whether brackets are properly nested

This question evaluates proficiency in sequence validation, paired-token matching, and the use of data structures to manage nested elements within str...

Coding & AlgorithmsStacks & Queues
14
0
109 people solved
Jan 6, 2026
Oracle logo
Oracle
Easy
Software Engineer Locked

Find the Minimum Jumps to Reach the Last Index

Find the minimum number of forward jumps needed to reach the last array index when each value limits the next jump length. The question defines reacha...

Coding & Algorithms
1
0
14 people solved
May 24, 2026
Citadel logo
Citadel
Hard
Data Scientist Locked

Solve Classic Probability Questions

This set evaluates probabilistic reasoning and expectation computation across topics such as sequential conditional survival, convolution of continuou...

Statistics & MathProbabilityPuzzles & Brainteasers
27
0
207 people solved
Feb 21, 2026
Two Sigma logo
Two Sigma
Hard
Data Scientist Locked

Add two integer strings using digit-adder

This question evaluates proficiency in string-based arithmetic, digit-wise addition, carry propagation, and management of arbitrarily large non-negati...

Coding & Algorithms
10
0
88 people solved
Jan 6, 2026
Microsoft logo
Microsoft
Medium
Data Scientist Locked

How would you build and evaluate a classifier?

This question evaluates a data scientist's proficiency in binary classification model evaluation, end-to-end machine learning project design, and mode...

Machine Learning
4
0
62 people solved
Jan 16, 2026
TikTok logo
TikTok
Medium
Data Scientist

Implement streaming SRM detector with late events

Implement a streaming detector for sample ratio mismatch (SRM) across many concurrent experiments. Input is two topic-partitioned streams: assignments...

Coding & AlgorithmsHypothesis TestingBatch & Stream Processing
4
0
92 people solved
Oct 13, 2025
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