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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
American logo
American
Medium
Software Engineer

Cover the Most Points with an Axis-Aligned Rectangle of Bounded Perimeter

Place an axis-aligned rectangle with perimeter at most P to cover as many supplied two-dimensional points as possible. Function Signature maximum_cove...

Coding & AlgorithmsMath & Number Theory
1
0
16 people solved
Sep 2, 2026
Gusto logo
Gusto
Medium
Software Engineer

Calculate Tax from Progressive Brackets

Calculate Tax from Progressive Brackets Problem Implement calculateProgressiveTax(income, upperBounds, ratesBps) -> tax. income is a nonnegative integ...

Coding & Algorithms
3
0
37 people solved
Aug 1, 2026
Databricks logo
Databricks
Medium
Software Engineer

Implement Random Connectivity and Grid Routing

This entry contains two independent coding problems. Problem 1: Uniformly connect node groups You are given k non-empty, disjoint groups of unique nod...

Coding & AlgorithmsGraphsGrids & Matrices
16
1
174 people solved
Apr 17, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer

Explain Bias and Variance in Model Generalization

Explain Bias and Variance in Model Generalization Explain the bias–variance tradeoff in machine learning. Use a supervised prediction setting of your ...

Machine LearningML FundamentalsModel Evaluation
1
0
12 people solved
Sep 12, 2026
Cursor logo
Cursor
Hard
Software Engineer

Implement a Merkle-tree repo diff

You are given two snapshots of a source-code repository on disk, each represented by a root directory path. Implement a Merkle tree over the directory...

Coding & AlgorithmsTrees
42
0
434 people solved
Feb 14, 2026
Google logo
Google
Medium
Software Engineer Locked

Minimize Direction Violations in a Directed Road Network

Find a route through a directed road network that minimizes travel against the original edge directions. Model forward and reverse traversal costs cor...

Coding & AlgorithmsGraphs
67
5
474 people solved
Jul 5, 2026
Abridge logo
Abridge
Hard
Software Engineer

Expand a Nested Repeat-Count Encoded String

You are given an encoded string s. The encoding rule is k[text]: the text inside the square brackets is repeated exactly k times, where k is a positiv...

Coding & AlgorithmsStacks & QueuesParsing & Interpreters
0
0
6 people solved
Sep 24, 2026
Amazon logo
Amazon
Hard
Software Engineer Locked

Maximize Money in K Consecutive Bags

Practice an interval-window problem that asks for the richest run of k consecutive weighted bags on a sparse infinite line.

Coding & Algorithms
15
1
130 people solved
Jun 1, 2026
Zoox logo
Zoox
Medium
Backend Engineer Locked

Design a Pricing Service with Reliable Payment Handling

Design pricing and payment orchestration emphasizing idempotency, reconciliation, and failure handling rather than supply-demand matching. Connect req...

System Design
5
0
49 people solved
Aug 6, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Implement a Time-Aware Task Manager

This question evaluates the ability to design and implement in-memory data structures and algorithms for time-aware state management, including per-us...

Coding & Algorithms
22
0
159 people solved
May 17, 2026
Replit logo
Replit
Medium
Software Engineer Locked

Design a Multi-Channel Notification System

Design a notification platform that routes one logical request across in-app, email, SMS, or push channels under user preferences. The system must han...

System Design
20
1
163 people solved
Aug 3, 2026
J.P. Morgan logo
J.P. Morgan
Easy
Software Engineer

Minimize String Length by Deleting AB and BB Pairs

Given a string seq containing only A and B, you may repeatedly delete either adjacent substring AB or adjacent substring BB. After each deletion, conc...

Coding & AlgorithmsStacks & QueuesArrays & Strings
0
0
8 people solved
Sep 8, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Design a Centralized Logging System

This question evaluates a candidate's ability to design a large-scale, distributed logging system covering ingestion, storage, indexing, and query ser...

System DesignObservabilityMessaging & Event-Driven
46
0
535 people solved
Jun 30, 2026
Cursor logo
Cursor
Medium
Software Engineer Locked

Design an In-Memory Transactional Key-Value Store

This Cursor software engineering question evaluates how a candidate designs a transactional in-memory key-value store with clear API semantics. It is ...

Software Engineering FundamentalsTransactions & Isolation
92
0
789 people solved
Jul 2, 2026
Jane Street logo
Jane Street
Medium
Software EngineerIntern

Turning Interview Code into a Reusable Library or API

You have just finished implementing a small game engine during a coding interview: a board data structure for a two-player piece-dropping game, a func...

Software Engineering FundamentalsCode Quality & Maintainability
105
1
832 people solved
Nov 6, 2025
Hudson River Trading logo
Hudson River Trading
Hard
Software EngineerNew Grad

Implement Order Modification Feature

You are given an existing C++ trading system with a client/server architecture. The current system already supports two request types: - AddOrder(orde...

Coding & AlgorithmsCode Quality & MaintainabilityAPI Design
27
0
225 people solved
Mar 13, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Diagnose why a scaled system became slow

This question evaluates proficiency in diagnosing performance regressions in scaled production services, emphasizing observability, bottleneck identif...

System DesignReliability & SREObservability
54
0
444 people solved
Jan 22, 2026
Cisco logo
Cisco
Easy
Software Engineer

Python and pytest Fundamentals: Fixtures, Decorators, and Generators

Answer three fundamentals questions about Python and pytest. Use short code examples wherever they make an explanation concrete. Clarifying Questions ...

Software Engineering FundamentalsProgramming LanguagesTesting & Quality
0
0
8 people solved
Sep 19, 2026
C3 AI logo
C3 AI
Medium
Data ScientistIntern

Compare How Models Respond to Multicollinearity

Compare How Models Respond to Multicollinearity Compare multicollinearity in unregularized linear regression, L1-regularized linear regression, a deci...

Machine LearningRegression & Statistical ModelingSupervised Learning
0
0
10 people solved
Sep 15, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Design Durable One-to-One Web Messaging at Large Scale

Design a one-to-one text messaging application with Web clients and 100 million daily active users. Group chats, images, video, and mobile push notifi...

System DesignReal-Time SystemsDistributed Transactions & Idempotency
0
0
9 people solved
Sep 1, 2026
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