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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
Zoox logo
Zoox
Easy
Data Scientist

Solve estimation and probability brainteasers

This is a set of independent estimation and probability brainteasers of the kind asked rapid-fire from a slide deck. Treat each one separately. For ev...

Statistics & MathPuzzles & Brainteasers
179
1
2370 people solved
Nov 13, 2025
MongoDB logo
MongoDB
Hard
Software Engineer Locked

Design a Scalable Read-Prefetch System

Design a scalable read-prefetch service with prioritized deduplicated candidates, bounded memory and concurrency, expiration and cancellation, demand ...

System Design
8
0
96 people solved
Aug 14, 2026
Google logo
Google
Medium
Product Manager

A/B Testing a Generative AI Feature Whose Outputs Vary from Run to Run

You are the product manager for a feature built on a generative AI model. The model samples its responses, so the same input can produce a different o...

Analytics & ExperimentationExperiment Design (A/B Testing)LLM Evaluation
1
0
15 people solved
Oct 7, 2026
Apple logo
Apple
Medium
Product Manager

Choosing and Sequencing the Next Apple Watch Health Capabilities

You are interviewing for a product manager role at Apple. The interviewer wants to know how you would choose the health features Apple Watch should ta...

Product Design & StrategyPrioritization & TradeoffsRoadmapping & Planning
1
0
12 people solved
Oct 4, 2026
Google logo
GoogleWells Fargo
Hard
Software Engineer

Does an Injective Letter-to-Digit Sum Exist?

Problem Assign each uppercase letter one decimal digit, with different letters assigned different digits. Decode every left-side word and result as a ...

Coding & AlgorithmsBacktracking & RecursionMath & Number Theory
0
0
11 people solved
Google logo
Google
Easy
Data Scientist

Build a Next-Word Predictor

Implement a simple next-word model over tokenized training sentences. You need to write two functions: 1. train(sentences): receives a list of tokeniz...

Coding & AlgorithmsML CodingNatural Language Processing
47
1
405 people solved
Feb 8, 2026
Pinterest logo
Pinterest
Medium
Software Engineer

Assign Pins to Shortest Columns

You are given a list of pins, where each pin has a height, and a fixed number of columns in a masonry-style layout. Process the pins in their original...

Coding & Algorithms
11
0
142 people solved
Apr 9, 2026
Asana logo
Asana
Medium
Software Engineer

Design and Solve a Rotatable Jigsaw Puzzle

Design and Solve a Rotatable Jigsaw Puzzle Design the classes and a solve operation for a rectangular jigsaw puzzle. You are given all pieces, but not...

Software Engineering Fundamentals
5
0
103 people solved
Apr 13, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer

Behavioral: Resolving a Team Conflict and Working Through a Constraint

Answer two common behavioral questions. They were asked in a short behavioral session of about 25 to 30 minutes, so each answer should be concise. Cla...

Behavioral & LeadershipConflict & CollaborationAmbiguity & Decision Making
2
0
33 people solved
Jul 16, 2026
Atlassian logo
Atlassian
Hard
Software Engineer

Design a scalable tagging system

Design a scalable, multi-tenant tagging system that lets users attach multiple tags to arbitrary resources ("items") and query them efficiently. The s...

System DesignSearch & Feed SystemsStorage & Sharding
82
0
621 people solved
Aug 4, 2025
Pinterest logo
Pinterest
Hard
Software Engineer Locked

Design Individual and Bulk Merchant Product Updates with Image Uploads

Design merchant product updates, bulk-job results, image upload processing, concurrency control, and recovery from partial failures.

System DesignSystem Design FundamentalsAPI Design
4
0
41 people solved
Aug 28, 2026
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Design an Audit Logs Service

This question evaluates the ability to design a scalable, multi-tenant audit logging system, covering event storage, tamper-evident retention, and eff...

System DesignStorage & ShardingIndexing & Query Performance
30
0
333 people solved
Jun 17, 2026
Plaid logo
Plaid
Medium
Software Engineer Locked

Explain What You Seek and an Unexpected Project Outcome

Prepare concise answers about priorities for a next role and a project whose outcome changed unexpectedly. Ground both parts in real evidence, showing...

Behavioral & Leadership
15
0
118 people solved
Aug 1, 2026
DevRev logo
DevRevAmazonGoogle

Also asked at Google, Meta, Microsoft, Bloomberg

Hard
Software Engineer

Find the Shortest Contiguous Segment Reaching a Sum Threshold

Problem Return the minimum length of a nonempty contiguous segment of nums whose sum is at least k. Return -1 if no segment qualifies. Values may be n...

Coding & AlgorithmsStacks & QueuesArrays & Strings
1
0
14 people solved
Goldman Sachs logo
Goldman Sachs
Easy
Software Engineer Locked

Minimum Starting Health to Cross a Grid Moving Only Right or Down

Given a grid of damage and healing values, find the smallest positive starting health that lets a traveler move only right or down from the top-left c...

Coding & AlgorithmsDynamic Programming
9
0
126 people solved
Sep 13, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Mark and Compact a Heap-Indexed Subtree

In a dense heap-indexed binary tree array, mark a target node and all indexed descendants with -1, then stable-compact the survivors. Return separate ...

Coding & AlgorithmsTreesArrays & Strings
10
0
142 people solved
Jul 2, 2026
Amazon logo
AmazonTeslaGoogle

Also asked at Google, Meta, Microsoft, Bloomberg, TikTok, Goldman Sachs, Anduril, Zomato

Medium
Software Engineer

Find the Fewest Rolls through a Snakes-and-Ladders Board

Problem The n-by-n board labels squares1 through n squared, beginning at the bottom-left cell and reversing horizontal direction on every row upward. ...

Coding & AlgorithmsGraphsSimulation & State Machines
0
0
10 people solved
Anthropic logo
Anthropic
Medium
Software Engineer

Implement and derive backprop from scratch

Tiny Neural Network From First Principles: Binary Classification Implement and analyze a minimal neural network for binary classification with a singl...

Machine LearningML CodingNeural Networks & Training
78
0
1352 people solved
Sep 6, 2025
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Nutanix

Medium
Software Engineer

Maximize Two Sight Values Minus Their Index Distance

Problem Choose two different positions i<j in values. Their score is values[i]+values[j]+i-j, combining both values and subtracting their index distan...

Coding & AlgorithmsArrays & StringsDynamic Programming
1
0
10 people solved
ByteDance logo
ByteDance
Medium
Applied ScientistNew Grad

Present a Past Project and Defend Its Motivation Under Challenge

Present one of your own projects, such as a research, thesis or internship project, in about 15 minutes. Right at the motivation, before you get to th...

Behavioral & LeadershipProject Deep Dive
2
0
18 people solved
Oct 8, 2026
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