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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
Coupang logo
Coupang
Medium
Software Engineer

Design an IAM system for services and users

System Design Prompt Design an Identity and Access Management (IAM) system for an organization/platform. The system must support: - Human users and se...

System DesignAuthentication & AuthorizationSystem Design Fundamentals
18
0
184 people solved
Dec 13, 2025
Databricks logo
Databricks
Medium
Software Engineer Locked

Design a Chat Application with a Partitioned Cache

Design a direct and small-group chat application with durable messaging, online delivery, offline catch-up, ordering, and duplicate handling. Examine ...

System DesignReal-Time SystemsCaching
6
0
106 people solved
May 27, 2026
Capital One logo
Capital One
Hard
Data Scientist

Present and critique an airline delay analysis

Predicting Airline Departure Delays — Technical Screen Prompt Context You have 15 minutes to review a slide deck on predicting airline departure delay...

Analytics & ExperimentationFeature EngineeringRegression & Statistical Modeling
47
0
320 people solved
Oct 13, 2025
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Take Ownership Through Ambiguity

Tell how you took ownership of an ambiguous problem involving goals, users, constraints, or responsibility. Show how you separated facts from assumpti...

Behavioral & Leadership
1
0
16 people solved
Aug 21, 2026
Databricks logo
Databricks
Medium
Software EngineerSenior+

Implement RLE and bit-packing compression

You are asked to implement two related compression/decompression schemes: Run-Length Encoding (RLE) and bit-packing. --- Part 1 — Run-Length Encoding ...

Coding & AlgorithmsArrays & StringsBit Manipulation
62
1
422 people solved
Oct 10, 2025
Google logo
Google
Easy
Software Engineer

Compute minimum rooms for time intervals

You are given a list of meeting time intervals, where each interval is represented as [start, end) (start time inclusive, end time exclusive) and star...

Coding & AlgorithmsIntervals & Scheduling
28
0
206 people solved
Mar 1, 2026
Capital One logo
Capital One
Easy
Machine Learning Engineer Locked

How would you improve card-type detection?

This question evaluates a candidate's ability to design robust detection logic, covering system design, data modeling, validation, and operational con...

Software Engineering FundamentalsPayments & LedgersCode Quality & Maintainability
15
0
126 people solved
Feb 11, 2026
Optiver logo
Optiver
Medium
Software Engineer

Explain OS processes, threads, and memory

Explain OS processes, threads, and memory Explain core operating system concepts: processes vs threads, context switching, and scheduling (preemptive ...

Coding & AlgorithmsOperating SystemsConcurrency
44
2
443 people solved
Jul 17, 2025
Anthropic logo
Anthropic
Medium
Software Engineer

Explain Anthropic motivation and leadership stories

Anthropic's non-technical loop for Software Engineers spans two distinct sessions: a Culture / values interview and a Hiring-Manager (HM) round that r...

Behavioral & LeadershipMotivation & FitProject Deep Dive
33
0
499 people solved
Feb 28, 2026
Imc logo
Imc
Medium
Data ScientistIntern Locked

Managing a Research Project End to End

Explain how you take an ambiguous research question through planning, data validation, execution, review, and a decision-ready handoff with limitation...

Behavioral & Leadership
3
0
25 people solved
Aug 14, 2026
ByteDance logo
ByteDance
Medium
Software EngineerNew Grad

Check Whether Every Course Can Be Completed Under Prerequisite Rules

There are n courses, labeled 0 to n - 1. Each pair [a, b] in prerequisites means that course b must be completed before course a can be taken. Courses...

Coding & AlgorithmsGraphs
0
0
6 people solved
Aug 17, 2026
Apple logo
Apple
Medium
Machine Learning EngineerNew Grad

Implement TF-IDF scoring for documents

Problem Implement a simplified TF–IDF scorer. You are given: - A list of documents docs, where each document is a string. - A query string q. Tokeniza...

Coding & AlgorithmsSearch Relevance
16
0
149 people solved
Dec 15, 2025
Citadel logo
Citadel
Medium
Data Scientist

Analyze Correlations and Generate Gaussians

You are interviewing for a quantitative data science role. Answer the following probability and simulation questions: 1. Let \(X\), \(Y\), and \(Z\) b...

Machine LearningProbability
33
0
315 people solved
Feb 21, 2026
Databricks logo
Databricks
Medium
Software Engineer

Design IP/CIDR rule matcher

Design and implement a rule matcher that returns 'accept' or 'deny' for a given IPv4 address based on a set of rules. Each rule can be either an inclu...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
40
0
387 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Medium
Frontend Engineer Locked

Build an Arrow-Controlled Kanban Board in React

Build an accessible React and TypeScript Kanban board whose arrow controls move tasks between ordered columns. Learn normalized state, destination-bot...

Software Engineering Fundamentals
3
0
40 people solved
Aug 3, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Refactor a chat message processing function

This question evaluates a candidate's ability to refactor and implement clear, maintainable message-processing logic—covering code organization, comma...

Coding & AlgorithmsCode Quality & MaintainabilityJavaScript & TypeScript
22
0
217 people solved
Jan 2, 2026
Stripe logo
Stripe
Medium
Data Scientist

Evaluate Stripe Capital Lending Strategy

Stripe is considering expanding Stripe Capital, a lending product for existing merchants on the platform. Eligible merchants receive a pre-qualified w...

Analytics & ExperimentationBusiness Case AnalysisMetric Diagnostics
15
0
149 people solved
Nov 29, 2025
Optiver logo
Optiver
Medium
Quantitative Trader

Solve a Skyscraper puzzle efficiently

Design and implement a solver for the Skyscraper logic puzzle on an $N \times N$ grid, where $3 \le N \le 7$. The board is a grid of building heights....

Coding & AlgorithmsBacktracking & Recursion
69
0
480 people solved
Sep 6, 2025
Valon logo
Valon
Hard
Software Engineer

Implement an in-memory SQL-like table

Implement a simplified in-memory SQL-like database for a single table. You should support the following operations on a table with a fixed schema (a l...

Coding & AlgorithmsData Structure Design
19
0
333 people solved
Feb 17, 2026
Optiver logo
Optiver
Hard
Software Engineer

Design a topic-based news subscription system

Topic-Based News Subscription Service — Design and Implementation Context Build an in-memory service that manages subscribers and delivers relevant ne...

System DesignSearch & Feed SystemsRate Limiting
83
0
1452 people solved
Sep 6, 2025
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