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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
Amperity logo
Amperity
Hard
Software Engineer

Design an Online SQL Query Service over Apache Iceberg Tables

Design an online service where users submit SQL statements and get results back, with all of the data stored in Apache Iceberg tables. Users work thro...

System DesignSystem Design FundamentalsStorage Formats & Partitioning
1
0
16 people solved
Sep 9, 2026
StackAdapt logo
StackAdapt
Medium
Machine Learning Engineer

Camel and Bananas: Maximize Bananas Delivered Across the Desert

A camel has to move bananas from a starting point across a desert to a market. Assume the standard parameters of this classic brainteaser: - 3,000 ban...

Statistics & MathPuzzles & Brainteasers
3
0
58 people solved
Sep 9, 2026
Apple logo
Apple
Medium
Product Manager

Behavioral PM Story: Diagnosing and Resolving the Toughest Product Problem You Owned

Walk me through a difficult product problem you faced as a product manager. What made it hard, and how did you get past it? `hint Make the difficulty ...

Behavioral & LeadershipAmbiguity & Decision Making
0
0
11 people solved
Jun 24, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Resolve Package Dependencies with Cycle Detection

Produce a deterministic dependency-first build order for every package reachable from a target. Candidates must handle shared dependencies, references...

Coding & Algorithms
10
0
78 people solved
Jul 29, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Design a Visa-like payment processing system

This question evaluates a candidate's ability to design a secure, low-latency card payment processing network, testing knowledge of distributed system...

System DesignPayments & LedgersDistributed Transactions & Idempotency
31
0
541 people solved
Feb 12, 2026
Salesforce logo
Salesforce
Medium
Member of Technical Staff Locked

Implement Merge Sort and Return a Sorted Array

Implement merge sort from first principles and return integers in nondecreasing order without a built-in sort. The exercise covers empty input, duplic...

Coding & Algorithms
8
0
77 people solved
Aug 31, 2026
Amazon logo
AmazonGoogleDoorDash

Also asked at DoorDash, Meta, Bloomberg, Goldman Sachs, Sprinklr

Medium
Software Engineer

Detect a Strict 132 Pattern

Detect a Strict 132 Pattern Given an integer array nums, determine whether it contains three indices i < j < k such that: `text nums[i] < nums[k] < nu...

Coding & AlgorithmsStacks & QueuesArrays & Strings
0
0
6 people solved
Visa logo
VisaInfosysMicrosoftPoint72

Also asked at Microsoft, Point72

Medium
Software Engineer

Maximize the Bitwise OR Within a Doubling Budget

Maximize the Bitwise OR Within a Doubling Budget You are given a zero-indexed array nums of positive integers and an integer k. One operation chooses ...

Coding & AlgorithmsBit ManipulationGreedy
1
0
14 people solved
Goldman Sachs logo
Goldman SachsUberThoughtSpot

Also asked at ThoughtSpot, WeRide, Google

Hard
Software Engineer

Count Tree Paths Whose Edge Letters Can Form a Palindrome

Count Tree Paths Whose Edge Letters Can Form a Palindrome You are given a connected, undirected tree with no cycles, rooted at node 0. Its n nodes are...

Coding & AlgorithmsTreesBit Manipulation
0
0
7 people solved
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Design a Multi-Channel Notification System

Design a multi-channel notification platform for push, email, SMS, and in-app messages that respects consent, preferences, quiet hours, locale, priori...

System DesignMessaging & Event-DrivenDistributed Transactions & Idempotency
54
0
368 people solved
Jul 2, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+

Design a Parking Lot Management System's Object Model with Evolving Requirements

Design the object model for a parking lot management system: the main classes and interfaces, what each is responsible for, how they relate, and the c...

Software Engineering FundamentalsLow-Level Design (OOP)Concurrency
1
0
22 people solved
Jun 19, 2026
eBay logo
eBay
Easy
Applied Scientist

Optimizing BERT inference latency and throughput for a production NLP service

A fine-tuned BERT-style encoder serves predictions in production (for example, classifying or tagging short text). It is now too slow or too expensive...

Machine LearningMLOps & Model ServingTransformers & Attention
1
0
16 people solved
Sep 24, 2026
Zoox logo
Zoox
Medium
Software Engineer Locked

Three Array Problems for Trading Geometry and Grouping

Solve three independent array and grouping tasks: one buy/sell profit, a four-value line witness using distinct indices, and deterministic nickname-sa...

Coding & Algorithms
8
0
121 people solved
May 11, 2026
Spotify logo
Spotify
Medium
Backend Engineer

A Time You Lifted Your Team's Morale and Energy

Tell me about a time you brought positivity to your team. This is a less common variant of the usual teamwork question, so the interviewer is listenin...

Behavioral & LeadershipMentoring & Team Growth
0
0
14 people solved
Jul 7, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Design a Low-Latency Typeahead Service

Design a low-latency typeahead service that returns up to ten dynamically scored suggestions with deterministic tie-breaking, exact updates, sharding,...

System DesignSearch & Feed SystemsPartitioning & Consistent Hashing
10
0
185 people solved
Aug 11, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Deep-Clone a Hand-Built Doubly Linked List with an Arbitrary Special Pointer

Implement a doubly linked list in which every node has four fields: - value: the node's value (assume an integer); - left: the previous node, or null ...

Software Engineering FundamentalsLinked Lists
1
0
17 people solved
Aug 4, 2026
Reddit logo
Reddit
Hard
Data ScientistSenior+ Locked

Estimate Incremental Search-Ad Revenue Without an A/B Test

Practice estimating incremental search-ad revenue when 100 eligible users are randomly assigned to treatment outside a conventional A/B platform. Defi...

Analytics & ExperimentationExperiment Analysis & ReadoutBusiness Case Analysis
26
0
176 people solved
Jun 24, 2026
Google logo
Google
Hard
Software EngineerSenior+ Locked

Solve order-statistics and XOR-triplet problems

This multi-part question evaluates skills in order-statistics and efficient counting for array inversion-like problems, alongside bitwise manipulation...

Coding & AlgorithmsBit Manipulation
33
0
306 people solved
Jan 22, 2026
Intuit logo
Intuit
Easy
Software Engineer

Validate bracket sequence

Given a string s containing only the characters (, ), [, ], {, and }, determine whether the brackets are properly matched. A string is valid if: - Eve...

Coding & Algorithms
15
0
110 people solved
Apr 2, 2026
Meta logo
Meta
Hard
Machine Learning Engineer Locked

Find A Low-Quality Annotator From Label Data

Practice a pandas-style data analysis prompt for identifying a low-quality annotator from label data. The question emphasizes cleaning, agreement or g...

Data Manipulation (SQL/Python)Annotation & Label QualityPandas & Python Data
8
0
100 people solved
Jun 2, 2026
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