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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
Google logo
Google
Hard
Data Scientist Locked

Design and critique an abuse-detection ML system

This question evaluates system-design and production machine learning competencies including large-scale classification versus risk scoring, handling ...

Machine LearningML System DesignFairness & Bias
12
0
122 people solved
Oct 13, 2025
Upstart logo
Upstart
Medium
Data Scientist

Estimate and Derive Regression Coefficient for X on y

Estimate and Derive Regression Coefficient for X on y Statistics & Probability Onsite — Two-Part Question Context - You have a simple linear data-gene...

Statistics & MathRegression & Statistical ModelingSampling & Estimation
97
0
392 people solved
Aug 4, 2025
Walmart Labs logo
Walmart Labs
Medium
Product Manager

Explaining Your Motivation to Join Walmart Labs as a Product Manager

You are interviewing for a product manager role at Walmart Labs, Walmart's technology group. The interviewer asks why you want to work there. How do y...

Behavioral & LeadershipMotivation & Fit
0
0
9 people solved
Dec 19, 2025
Expedia logo
Expedia
Medium
Software EngineerSenior+

How do you use AI for coding?

An interviewer asks about your day-to-day use of AI coding assistants. Answer the following: 1) Do you use AI to write code at work? If yes, for what ...

Behavioral & LeadershipAI-Assisted Development
17
0
210 people solved
Oct 29, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Design A Scalable Web Crawler

Design a scalable web crawler that discovers, fetches, parses, and stores web pages for downstream use such as search indexing or content analysis. Yo...

System DesignSystem Design FundamentalsJob Scheduling & Workflows
14
0
120 people solved
Apr 18, 2026
Concentric Ai logo
Concentric Ai
Medium
Software Engineer Locked

Count Students Outside Their Height-Sorted Positions

Count the positions where students' current heights differ from the nondecreasing arrangement of the same multiset of heights.

Coding & Algorithms
3
0
26 people solved
Aug 10, 2026
Amazon logo
Amazon
Hard
Applied Scientist

Design a RAG system end to end

Design a Retrieval‑Augmented Generation (RAG) System for Enterprise Text Context You are building a production RAG system that answers employee questi...

ML System DesignRetrieval-Augmented GenerationAuthentication & Authorization
33
1
262 people solved
Sep 6, 2025
Airbnb logo
Airbnb
Medium
Data Scientist Locked

Build and evaluate an order prediction model

This question evaluates a data scientist's competency in building and evaluating binary classification models with temporal constraints and operationa...

Machine LearningSupervised LearningModel Evaluation
12
0
127 people solved
Oct 13, 2025
DRW logo
DRW
Medium
Data Scientist

Compute rolling standard deviation in O(n)

Compute rolling standard deviation in O(n) Given an array of numbers and a window size k, compute the rolling standard deviation for every contiguous ...

Coding & AlgorithmsProbabilityTwo Pointers & Sliding Window
11
0
133 people solved
Aug 9, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Write SQL and pandas for shopping events

Use the schema and sample data below to answer SQL and pandas tasks. Treat 'today' as 2025-09-01. Schema users(user_id INT, country STRING) pins(pin_i...

Data Manipulation (SQL/Python)
8
0
89 people solved
Oct 13, 2025
Google logo
Google
Medium
Software EngineerNew Grad

Return the Lexicographically Smallest Two-Sum Index Pair

Return the Lexicographically Smallest Two-Sum Index Pair Problem Implement twoSumSmallestPair(nums, target) -> pair. Return the lexicographically smal...

Coding & Algorithms
15
0
94 people solved
Dec 8, 2025
Meta logo
Meta
Easy
Product Analyst

Explain a project’s impact and product thinking

A Head of Product asks: 1. Pick one analytics/data science project you led end-to-end. 2. What was the product problem and why did it matter? 3. What ...

Behavioral & LeadershipProject Deep DiveMetrics & KPIs
18
0
132 people solved
Feb 22, 2026
LinkedIn logo
LinkedIn
Easy
Data Scientist

Compute each member’s current notification status

Question You are given two tables describing LinkedIn members’ push-notification settings. Compute each member’s current notification status as of 202...

Data Manipulation (SQL/Python)SQL
17
0
196 people solved
Feb 1, 2026
Meta logo
Meta
Medium
Software EngineerSenior+

Behavioral: Managing Shifting Priorities and Changing Approach Mid-Project

This is a behavioral round in a senior to staff-level software engineering loop. Both prompts below test judgment under change: how you decide what ma...

Behavioral & LeadershipAmbiguity & Decision MakingOwnership & Execution
1
0
16 people solved
Apr 1, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Implement a type-based mutex for tasks

This question evaluates understanding of concurrency and synchronization primitives, testing the ability to design a thread-safe type-based mutex that...

Coding & AlgorithmsConcurrency
15
0
116 people solved
Mar 1, 2026
Zoox logo
Zoox
Medium
Software Engineer Locked

Explain GPU Memory And Matrix Transpose Optimization

Study GPU software engineering fundamentals through concepts like warps, registers, shared memory, coalescing, cache behavior, tiling, and matrix tran...

Software Engineering FundamentalsGPU Programming
14
0
98 people solved
Jun 22, 2026
Qualified Health logo
Qualified Health
Medium
Software Engineer Locked

Design Notifications for One Million Internal Producer Services

Design notification ingestion and delivery for a million internal producers, separating service-count scale from throughput, bursts, and fanout.

System DesignMessaging & Event-DrivenRate Limiting
1
0
20 people solved
Sep 15, 2026
ByteDance logo
ByteDance
Medium
Machine Learning Engineer

Explain XGBoost's Overfitting Resistance

A single, unpruned decision tree can recursively partition the training set until its leaves describe individual training points, which makes it a hig...

Machine LearningSupervised LearningML Fundamentals
8
0
137 people solved
Mar 27, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Deliver an Important Project Under a Tight Deadline

Describe deadline-driven project delivery through business priorities, scope and quality tradeoffs, dependency management, and evidence of the deliver...

Behavioral & LeadershipOwnership & ExecutionPrioritization & Tradeoffs
2
0
27 people solved
Sep 14, 2026
Google logo
Google
Medium
Software Engineer Locked

Implement text wrapping, waitlist, and intervals

This question evaluates skills in string parsing and word-wrapping logic, data-structure design for FIFO queue management and deletions, and interval ...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
32
0
257 people solved
Feb 12, 2026
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