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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
LinkedIn logo
LinkedIn
Medium
Machine Learning Engineer

Answer practical ML foundations questions

In an ML interview, you are asked a series of practical ML foundation questions: 1) Model outputs probabilities. When do you need probability calibrat...

Machine LearningModel EvaluationFeature Engineering
37
0
272 people solved
Feb 18, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

How to answer common recruiter screen questions

Question You are in an initial recruiter / phone screen for a software engineering role at OpenAI. The recruiter asks a mix of logistics, employment-h...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making
37
0
413 people solved
Feb 2, 2026
Meta logo
Meta
Medium
Data Scientist Locked

Compare Shop and Web Ad Performance Without Overclaiming

Learn how to compare Shop and Web ad performance using spend and conversion data without turning an observational result into a causal claim. The anal...

Analytics & Experimentation
6
0
65 people solved
May 22, 2026
EliseAI logo
EliseAI
Easy
Software Engineer

Describe Something a Previous Engineering Team Did Not Do Well

Later in a 30-minute software engineer phone screen that is mostly behavioral and experience questions, the interviewer asks: > What's something your ...

Behavioral & LeadershipFailure & Learning
1
0
20 people solved
Jul 5, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Design an in-memory database with TTL and backups

You are asked to implement a small in-memory “database” that evolves across 4 parts. In each part you may reuse your previous code and only add/extend...

Coding & AlgorithmsData Structure Design
54
0
486 people solved
Nov 8, 2025
Datadog logo
Datadog
Easy
Software Engineer

Implement buffered file writer with concurrency support

You are given a simple file writer class that writes data directly to disk: `cpp class FileWriter { public: // Append data to the file on disk imm...

Coding & AlgorithmsData Structure DesignConcurrency
101
0
1071 people solved
Dec 2, 2025
Fuse Energy logo
Fuse Energy
Medium
Software Engineer

Implement simplified Excel with SET/GET/SUM

Implement a simplified in-memory spreadsheet that supports three operations: SET, GET, and SUM, similar to basic Excel functionality. Assumptions and ...

Coding & AlgorithmsData Structure DesignGraphs
76
0
517 people solved
Dec 8, 2025
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Bloomberg, Meta

Easy
Software Engineer

Return the Marked Primary Department or an Employee’s Sole Department

Problem Return employee_id and department_id for each employee’s primary department. Employees in several departments have exactly one row marked Y. R...

Data Manipulation (SQL/Python)SQL
0
0
7 people solved
Google logo
GoogleMicrosoftMeta

Also asked at Meta, Amazon, Bloomberg, Yandex, Innovaccer

Easy
Software Engineer

Return a Function That Always Greets

Problem Implement createHelloWorld() in JavaScript. Each call must create and return a new function. Whenever that returned function is called, it mus...

Coding & AlgorithmsJavaScript & TypeScript
0
0
4 people solved
Optiver logo
OptiverAmazonGoogle

Also asked at Google, Meta, Bloomberg

Hard
Software Engineer

Count Ordered Sequences That Sum to a Target

Count Ordered Sequences That Sum to a Target Count the distinct ordered sequences whose elements sum exactly to a positive target. You may use each al...

Coding & Algorithms
13
1
142 people solved
Amazon logo
Amazon
Medium
Software Engineer Locked

Minimum Path Length Through a Grid With One Allowed Cell Conversion

This question evaluates a candidate's grasp of shortest-path search on grids, specifically breadth-first search extended with a limited state budget f...

Coding & Algorithms
12
0
127 people solved
Jun 30, 2026
Roblox logo
Roblox
Medium
Software Engineer

Discovering a Design Flaw Right Before a Project Deadline: How Do You Respond?

Your team's project is close to its due date when you discover that a design decision made earlier in the project is flawed. What do you do? This scen...

Behavioral & LeadershipOwnership & ExecutionAmbiguity & Decision Making
2
0
21 people solved
Aug 5, 2026
Harvey logo
Harvey
Hard
Software Engineer

Determine identical files ignoring metadata

Question How would you determine whether two files contain identical bytes while ignoring all filesystem metadata? Propose and justify a hashing-based...

System DesignFile & Media StorageCryptography
100
0
701 people solved
Sep 6, 2025
Google logo
Google
Medium
Software EngineerSenior+

Technical Deep Dive: Present and Defend the Design of a Service You Own

The interviewer asks you to explain the architecture of a service you own and then take them through its technical details. There is no new problem to...

System DesignSystem Design FundamentalsProject Deep Dive
1
0
19 people solved
May 8, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+ Locked

Recover Sorted Digits from Scrambled English Number Words

Recover sorted digits from scrambled English number-word letters, including repeats, and analyze why arbitrary customer vocabularies may lose unique r...

Coding & AlgorithmsArrays & StringsGreedy
2
0
28 people solved
Aug 30, 2026
Internet Brands logo
Internet Brands
Medium
Product Manager

Taking an AI Feature From Idea to Launch: PM Ownership Story

Describe an AI-powered product or feature that you helped take from idea to launch. Walk the interviewer through what it did, the part you personally ...

Behavioral & LeadershipAI Product ManagementProject Deep Dive
0
0
7 people solved
Aug 5, 2026
Glean logo
Glean
Hard
Software Engineer

Implement 2048 tilt move

Problem: Implement a 2048 “tilt” (move) operation You are given a 4×4 board for the game 2048. Each cell contains either 0 (empty) or a power of two (...

Coding & AlgorithmsSimulation & State Machines
28
0
348 people solved
Feb 11, 2026
Capital One logo
Capital One
Medium
Product Manager

Product Improvement: Redesign a Water Bottle for One User Segment

Pick a water bottle and improve it. Decide which kind of bottle and which users you are improving it for, identify what frustrates them about the bott...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
1
0
22 people solved
Nov 28, 2025
Apple logo
Apple
Medium
Machine Learning EngineerNew Grad

Write a generator for substring pattern matches

Problem Write a generator that scans a string and emits a value whenever a substring matches a given pattern. Input - A string s - A string pattern (n...

Coding & AlgorithmsString Algorithms
10
0
191 people solved
Dec 15, 2025
Google logo
Google
Medium
Software Engineer

Compute servers needed for daily recurring jobs

You operate a cluster of identical servers that run recurring daily jobs. For a single day, you are given a list of job execution intervals. Each inte...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
30
0
299 people solved
Nov 5, 2025
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