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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
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Infer an Alien Alphabet from Sorted Words

Infer a valid alien alphabet from words already sorted in that language. Build precedence constraints from adjacent words, reject invalid prefix order...

Coding & Algorithms
3
0
38 people solved
Aug 15, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Explain database transactions and ACID

Database Transactions and ACID under Concurrency Prompt You are working with a relational database that supports transactions and multiple isolation l...

System DesignTransactions & IsolationDatabase Internals
17
0
130 people solved
Sep 6, 2025
ByteDance logo
ByteDance
Medium
Software Engineer

Design a Currency Exchange Rate Calculation and Conversion System

Design a system that calculates currency exchange rates and uses them to convert amounts between currencies for other services. Only the topic was rep...

System DesignSystem Design FundamentalsCaching
1
0
12 people solved
May 15, 2026
Bloomberg logo
BloombergMetaGoogle
Medium
Software Engineer

Return the Root Object from Unordered N-ary Nodes

Problem The native vector<Node*> contains every object of one N-ary tree in arbitrary order. Node values are unique. Return the original root Node poi...

Coding & AlgorithmsTreesBit Manipulation
1
0
8 people solved
Morgan Stanley logo
Morgan Stanley
Medium
Software Engineer

Respond to MS technology behavioral interview questions

You are interviewing for a technology role in the MS Technology division (e.g., at a large financial or technology firm). As part of the behavioral/fi...

Behavioral & LeadershipMotivation & FitEthics & Responsibility
21
0
175 people solved
Oct 2, 2025
IBM logo
IBM
Medium
Software Engineer Locked

Compute minimum rooms for meeting schedule

This question evaluates a candidate's competency in interval-based scheduling and resource allocation, assessing understanding of overlapping time int...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
15
0
227 people solved
Mar 1, 2026
TikTok logo
TikTok
Hard
Software Engineer

Compute maximum path sum in a binary tree

Question You are given the root of a binary tree where each node contains an integer value (which may be positive, zero, or negative). Return the maxi...

Coding & Algorithms
9
0
110 people solved
Oct 3, 2025
Coinbase logo
Coinbase
Hard
Software Engineer Locked

Design real-time crypto prices homepage

This question evaluates system design competency for real-time, low-latency data pipelines and client fanout for a crypto prices homepage, testing ski...

System DesignReal-Time SystemsSystem Design Fundamentals
15
0
240 people solved
Jan 22, 2026
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Meta, Bloomberg, TCS

Medium
Software Engineer

Find the Shortest All-One Decimal Integer Divisible by K

Problem Return the length of the smallest positive integer consisting entirely of decimal digit1 that is divisible by k. Return-1 if none exists. The ...

Coding & AlgorithmsMath & Number Theory
0
0
9 people solved
Tesla logo
Tesla
Medium
Software Engineer Locked

Design a Video Sharing Platform

Design a large-scale video platform with resumable uploads, idempotent transcoding, adaptive playback, CDN delivery, access control, and moderation ho...

System Design
3
0
38 people solved
Aug 24, 2026
Pinterest logo
Pinterest
Hard
Software Engineer

Design Pin recommendation system

Design Pinterest's Home Feed Recommendation System Problem Design an end-to-end recommendation system that powers the personalized home feed on Pinter...

ML System DesignSearch & Feed SystemsRecommendation Systems
31
0
305 people solved
Jul 28, 2025
Virtu Financial logo
Virtu Financial
Medium
Data Scientist Locked

Maximize Points by Buying Cost-Multiplier Cards

This question evaluates a candidate's ability to reason about optimal ordering and subset selection under a multiplicative-then-subtractive scoring ru...

Coding & Algorithms
5
0
40 people solved
Jun 25, 2026
Microsoft logo
Microsoft
Medium
Machine Learning EngineerIntern

Compute precision/recall from a flaky top-k API

You have 10 image files. Each file has a ground-truth label indicating whether it contains a dog. You can call an API like searchDogs(k) which is inte...

Software Engineering FundamentalsModel Evaluation
10
0
112 people solved
Feb 9, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer Locked

Implement string compression and decompression

This question evaluates proficiency in string manipulation, run-length encoding concepts, parsing numeric counts, and validation of encoded formats, i...

Coding & Algorithms
3
0
43 people solved
Jan 30, 2026
Amazon logo
Amazon
Medium
Software Engineer

Maximize Forward Jumps to the Last Array Index

Maximize Forward Jumps to the Last Array Index You are given a 0-indexed integer array nums of length n and an integer target. Start at index 0. A jum...

Coding & AlgorithmsDynamic ProgrammingGraphs
1
0
9 people solved
Meta logo
Meta
Medium
Product Manager

Design a Meta Feature That Helps People Understand, Discuss and Create Art

You are a product manager at Meta. Design a new feature that lets people engage with art. Decide where in Meta's apps the feature lives, who it is for...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
7 people solved
Aug 15, 2026
Amazon logo
Amazon
Medium
Data Scientist

Design SQL/Pandas aggregations on retail schema

Using the schema and sample data below, answer both parts. Assume today is 2025-09-01. Use standard SQL (e.g., PostgreSQL) and idiomatic pandas withou...

Data Manipulation (SQL/Python)
3
0
38 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Designing a Machine Learning System to Flag Inauthentic User Reviews

How would you use machine learning to detect fake reviews on a platform where users post ratings and written reviews? `hint Look past the text One rev...

Machine LearningTrust & SafetyML System Design
1
0
10 people solved
Mar 19, 2026
Hinge logo
Hinge
Easy
Data Engineer

Model course sales for a sports venue chain, query it, and track manager history

A chain of sports venues sells classes at each of its venues, and the operations team wants to see sales by venue and by class. You receive three sour...

Data Manipulation (SQL/Python)Dimensional ModelingSQL
0
0
5 people solved
May 12, 2026
Meta logo
Meta
Medium
Data Scientist

Demonstrate leadership in cross-functional collaboration

Question This is the Meta Data Scientist onsite behavioral & leadership round. The interviewer works through a set of leadership prompts and expects y...

Behavioral & LeadershipLeadership & InfluenceConflict & Collaboration
18
0
166 people solved
Oct 13, 2025
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