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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
Imc logo
Imc
Medium
Data ScientistIntern Locked

Handling Difficult Feedback

Respond constructively when a collaborator expresses an opinion that is difficult to hear.

Behavioral & Leadership
1
0
32 people solved
Aug 14, 2026
Google logo
Google
Medium
Software Engineer

Solve Quickselect, Tree Distance, and Prefix Substrings

You are given three independent coding tasks. 1. Implement Quickselect - Given an unsorted integer array nums and an integer k, return the k-th sma...

Coding & Algorithms
9
0
115 people solved
Apr 25, 2026
Lyft logo
Lyft
Medium
Machine Learning Engineer Locked

Reason About an Intercept Shift in Logistic Regression

Analyze how a fixed logistic-regression intercept shift changes the decision boundary and classification metrics on the same labeled sample. The discu...

Machine LearningRegression & Statistical ModelingModel Evaluation
19
0
133 people solved
Jul 4, 2026
Google logo
Google
Medium
Product Manager

Walk Through Your Recent ML Project's Data Flow and Data-Sourcing Hurdles

In a product manager interview focused on technical depth, you are asked about the most recent AI or machine learning project you worked on. Walk the ...

Machine LearningProject Deep DiveML Data Pipelines & Feature Stores
1
0
17 people solved
May 15, 2026
Microsoft logo
Microsoft
Hard
Software Engineer

Count Nondecreasing Arrays with Prescribed Digit Sums

Count Nondecreasing Arrays with Prescribed Digit Sums You are given an integer array digitSum of length n. Count the distinct integer arrays arr of th...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
0
0
8 people solved
Databricks logo
Databricks
Medium
Backend Engineer

Find First Anagram Occurrence

Given two strings text and pattern, return the starting index of the first substring in text that is an anagram of pattern. If no such substring exist...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings
23
0
230 people solved
Apr 2, 2026
Google logo
Google
Hard
Frontend EngineerSenior+

Design an Embeddable Streaming Chat Interface

Design an Embeddable Streaming Chat Interface Design an embeddable chat-agent widget. Cover the host-page integration, streaming responses over SSE or...

System Design
6
0
47 people solved
Apr 14, 2026
Amazon logo
AmazonGoogle
Medium
Software Engineer

Find the First Paint Step Completing a Row or Column

Find the First Paint Step Completing a Row or Column You are given a zero-indexed integer array arr and an m by n integer matrix mat. Each contains ev...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
0
0
10 people solved
OpenAI logo
OpenAI
Medium
Software Engineer

Design a Photo Storage Service That Deduplicates Uploads by SHA-256 Content Hash

Design a photo storage service in which users can upload photos, download them and delete them. Storage is deduplicated by content: if an uploaded pho...

System DesignFile & Media StorageApplication Security
1
0
23 people solved
Jul 13, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Implement a Simulated Memory Allocator

Implement a simulated memory allocator that supports allocate(size) and free(ptr) operations analogous to malloc and free. Treat memory as a contiguou...

Coding & AlgorithmsData Structure DesignMemory Management
65
1
1102 people solved
Sep 6, 2025
Anthropic logo
Anthropic
Medium
Machine Learning Engineer Locked

Explain multithreading vs multiprocessing

This question evaluates understanding of concurrency and parallelism, specifically multithreading versus multiprocessing, their interaction with multi...

Software Engineering FundamentalsConcurrencyOperating Systems
60
0
447 people solved
Feb 11, 2026
Amazon logo
AmazonGoogle
Easy
Software Engineer

Count Digit Occurrences That Divide the Original Number

Problem For positive integer num, count the decimal digit occurrences whose values divide the original num exactly. The input contains no zero digit, ...

Coding & AlgorithmsMath & Number Theory
1
0
10 people solved
Amazon logo
AmazonMetaUber

Also asked at Uber, Google, Bloomberg, Anduril, Apple

Easy
Software Engineer

Verify Lexicographic Word Order under a Supplied Alphabet

Problem The string order is a permutation of the lowercase English alphabet from earliest to latest. Return whether words is lexicographically nondecr...

Coding & AlgorithmsArrays & StringsSorting
0
0
10 people solved
Roblox logo
Roblox
Hard
Software Engineer

Design the manual review workflow

Design the manual review workflow System Design: Human-in-the-Loop Review Subsystem Context You are designing a human-in-the-loop (HITL) review subsys...

System DesignSystem Design FundamentalsAnnotation & Label Quality
18
0
213 people solved
Jul 31, 2025
Stripe logo
Stripe
Hard
Data Scientist

Design a leak-free time-split model

Predict 30-Day Purchase Probability at a Snapshot (Technical Screen) Assume you have user, event, and order data with two timestamps per row: - event_...

Machine Learning
9
0
117 people solved
Oct 13, 2025
Squarepoint logo
Squarepoint
Medium
Software Engineer

Evaluate Linear Regression Assumptions and Fit Three Points

Evaluate Linear Regression Assumptions and Fit Three Points Discuss the assumptions behind ordinary least squares, how multicollinearity affects a fit...

Machine Learning
5
0
68 people solved
Apr 22, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Compute Infection Time in a Grid

This question evaluates competence in grid-based graph traversal and simulation of propagation dynamics, focusing on state management, time-step model...

Coding & AlgorithmsGrids & Matrices
26
1
255 people solved
Apr 7, 2026
Uber logo
Uber
Medium
Software Engineer

Count connected islands using Union-Find

You are given an m x n grid of characters where '1' represents land and '0' represents water. An island is a group of horizontally or vertically adjac...

Coding & AlgorithmsGrids & MatricesGraphs
32
0
249 people solved
Feb 20, 2026
ByteDance logo
ByteDance
Medium
Machine Learning EngineerIntern

Design a Local Recommendation System

How would you build a local recommendation system? Begin by clarifying what local means and what is being recommended. Constraints and Clarifying Ques...

Machine LearningRecommendation SystemsRanking Models
0
0
7 people solved
Aug 4, 2026
Netflix logo
Netflix
Medium
Software Engineer

Design Netflix viewport deduplication

Design Netflix viewport deduplication Design an Algorithm to Ensure No Duplicates in the First Netflix Home-Page Viewport Context You are rendering a ...

System DesignSearch & Feed Systems
60
0
483 people solved
Aug 4, 2025
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