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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
NVIDIA logo
NVIDIA
Medium
Data Scientist

Explain NVIDIA fit and role value

Behavioral Prompt: Why NVIDIA and Why This Data Scientist Role? You are interviewing for a Data Scientist position. In a concise, 1–2 minute answer, a...

Behavioral & LeadershipMotivation & Fit
24
0
166 people solved
Oct 13, 2025
Google logo
Google
Medium
Software EngineerSenior+ Locked

Discuss Challenges, Difficult Colleagues, and Multitasking

Prepare concrete behavioral stories about a major challenge, a difficult working relationship, and competing priorities. Show your decision process, r...

Behavioral & Leadership
10
0
78 people solved
Jul 17, 2026
Meta logo
Meta
Medium
Data Scientist Locked

Fake Accounts [AE]

Evaluates probability, classification metrics, and feature engineering for fake-account detection. Strong answers apply Bayes' rule with rate-weighted...

Statistics & MathProbabilityFeature Engineering
227
6
572 people solved
Jul 12, 2025
Jump Trading logo
Jump Trading
Medium
Software Engineer Locked

Identify read-only files from permission records

This question evaluates proficiency in parsing and filtering structured data by interpreting Unix-like permission strings and extracting filenames bas...

Coding & AlgorithmsArrays & Strings
11
0
137 people solved
Feb 12, 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
L
Latitudeai
Medium
Backend EngineerSenior+ Locked

Design a Thread-Safe Bounded Blocking Queue

Design a thread-safe bounded blocking queue for multiple producers and consumers, with FIFO ordering and well-defined put, take, and close behavior. D...

Software Engineering Fundamentals
10
0
73 people solved
Jul 2, 2026
Google logo
Google
Medium
Product Manager

Google PM Behavioral: A Product Call Made on Incomplete Data

In a product manager interview at Google, you are asked to describe a product decision you made using data at a time when much of the information you ...

Behavioral & LeadershipAmbiguity & Decision Making
1
0
9 people solved
Aug 18, 2026
Perplexity logo
Perplexity
Hard
Software Engineer

Diagnose overloaded Kubernetes cluster

Kubernetes Overload: End-to-End Debug + Mitigation Plan You are given a Kubernetes-based microservices system that is currently overloaded, exhibiting...

System DesignReliability & SREContainers & Orchestration
27
0
223 people solved
Aug 13, 2025
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
Apple logo
Apple
Medium
Software Engineer

Zero out duplicates and sort an array

Coding question You are given an integer array arr of length about 75. - The data is not sorted. - The array may contain duplicate values. - You must ...

Coding & AlgorithmsSorting
28
0
249 people solved
Feb 12, 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
Snapchat logo
Snapchat
Medium
Machine Learning Engineer

Describe an innovation you drove end-to-end

Behavioral Question: Innovation Many teams value “innovation,” meaning you can generate and deliver novel, high-impact ideas. Prompt: - Tell me about ...

Behavioral & LeadershipInnovation & Simplification
12
0
119 people solved
Jan 10, 2026
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
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
Meta logo
Meta
Medium
Software Engineer

Solve Array Merge and Parentheses Cleanup

You are asked to solve two coding problems. Problem 1: Merge Three Sorted Arrays Given three integer arrays, each sorted in nondecreasing order, merge...

Coding & Algorithms
4
0
38 people solved
Apr 29, 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
Meta logo
Meta
Easy
Software Engineer

Implement an in-memory database with record locking

Implement an in-memory key–record database that supports basic CRUD on fields plus an exclusive lock per record. You are given a sequence of queries. ...

Coding & AlgorithmsData Structure DesignConcurrency
15
0
183 people solved
Mar 8, 2026
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
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
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