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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
J.P. Morgan logo
J.P. Morgan
Medium
Data ScientistNew Grad Locked

Explain Overfitting and Transformer Basics

This question evaluates proficiency in core machine learning competencies such as overfitting and generalization, selection and regularization of loss...

Machine Learning
7
0
52 people solved
Apr 7, 2026
Pinterest logo
Pinterest
Medium
Data Analyst

Compute percent of first-cancelled users who never rebook

You are interviewing for a health-tech product analytics role. Assume the following table contains one row per appointment with its final status. Tabl...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
8
0
59 people solved
Nov 22, 2025
Meta logo
Meta
Medium
Software Engineer

Compute top-N active customers

Maintain and return the top N customers by cumulative activity amount, where activity is defined as the sum of deposit amounts, pay amounts, and trans...

Coding & Algorithms
7
0
53 people solved
Sep 6, 2025
Roblox logo
Roblox
Hard
Data Scientist

Design real-time payments fraud model under constraints

Real-Time ML Policy Design: Prevent Unauthorized Purchases by Minors Context: You need to reduce unauthorized purchases by minors using their parents'...

Machine LearningML System DesignModel Evaluation
16
0
113 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Implement robust word counts and min/max

You receive a 50GB UTF-8 text corpus on disk. Implement a Python solution that:\n- Streams the file without loading it fully into memory.\n- Counts ca...

Data Manipulation (SQL/Python)Arrays & StringsProgramming Languages
10
0
98 people solved
Oct 13, 2025
Lyft logo
Lyft
Hard
Data Scientist Locked

How to target commute coupon users?

This question evaluates a candidate's proficiency in analytics, causal inference and experimentation design, user segmentation, and defining business ...

Analytics & ExperimentationCausal InferenceExperiment Design (A/B Testing)
11
0
89 people solved
Dec 12, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluate and Experiment with Harmful Content Detection Model

Evaluate and Experiment with Harmful Content Detection Model Evaluating a Harmful-Content Detection Model: Offline and Online Context You are given a ...

Machine Learning
78
0
170 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Navigate unknown grid to locate target

You control a mouse in an unknown 2D maze. You do not know the maze dimensions or your absolute coordinates. The interface exposes move() → bool (atte...

Coding & Algorithms
4
0
40 people solved
Sep 6, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Compare GCP vs AWS and testing strategy

Public Cloud Building Blocks, Compute Choice, and Testing Strategy Context Assume you are designing a new stateless HTTP microservice that exposes RES...

System Design
4
0
70 people solved
Sep 6, 2025
Uber logo
Uber
Hard
Data Scientist

Navigate urgency, priorities, and conflict

Behavioral & Leadership: Ambiguity, Dependencies, and Execution Under Pressure You will describe one real project where you faced high ambiguity and c...

Behavioral & Leadership
8
0
76 people solved
Oct 13, 2025
IXL Learning logo
IXL Learning
Medium
Software Engineer

Identify and prevent code-breaking inputs

Identify and prevent code-breaking inputs Identify inputs and scenarios that could break your implementation and explain how you would prevent them. C...

Coding & AlgorithmsTesting & Quality
8
0
86 people solved
Jul 17, 2025
Coinbase logo
Coinbase
Hard
Data Scientist

How to Analyze and Model Behavioral Data Effectively?

Analyze and Model Behavioral Data Effectively You receive a raw event-level behavioral dataset for a product funnel. The interviewer asks you to clean...

Machine LearningSupervised LearningModel Evaluation
107
0
324 people solved
Jul 12, 2025
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Implement sparse matrix storage, addition, and multiplication

This question evaluates understanding of sparse matrix representations, algorithmic efficiency for linear algebra operations, and the ability to manip...

Coding & AlgorithmsData Structure DesignArrays & Strings
13
0
180 people solved
Jan 6, 2026
Uber logo
Uber
Medium
Data Scientist

Design airport dispatch with ETA uncertainty

You control airport pickups with streaming ETAs for arriving flights and live driver locations/queues. Design an online dispatch algorithm that minimi...

Coding & AlgorithmsGeo & Delivery SystemsGraphs
16
0
113 people solved
Oct 13, 2025
Capital One logo
Capital One
Easy
Data Scientist

Calculate Profitability with Different Pricing Schemes

Unit Economics and Break-even Analysis You are evaluating a subscription product's monthly unit economics. Unless otherwise noted, fixed cost is $400 ...

Analytics & ExperimentationBusiness Case Analysis
67
0
290 people solved
Jul 12, 2025
Apple logo
Apple
Hard
Data Scientist

Implement random forest with OOB and imbalance

Implement a Memory-Efficient Random Forest (Binary Classification) Under Constraints You are asked to design and implement a Random Forest for binary ...

Machine Learning
7
0
83 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer

Validate word abbreviation and reconcile two abbreviations

Validate word abbreviation and reconcile two abbreviations Implement a function isValidAbbreviation(word: string, abbr: string) that returns true if a...

Coding & Algorithms
5
0
58 people solved
Jul 15, 2025
Instacart logo
Instacart
Hard
Data Scientist

Lead a zero-to-one initiative effectively

Take a Vague Mandate ("Improve Shopper Retention") from Idea to Launch Context You work in a two‑sided, on‑demand marketplace where "shoppers" are ind...

Behavioral & Leadership
8
0
77 people solved
Oct 13, 2025
Adobe logo
Adobe
Easy
Data Scientist

Describe Your Background and Alignment with This Role

Describe Your Background and Alignment with This Role Behavioral: Background Fit + Delivering Under Tight Timelines (STAR) Context You are in an onsit...

Behavioral & Leadership
10
0
73 people solved
Aug 4, 2025
TikTok logo
TikTok
Easy
Software Engineer

Explain motivation for QA and career goals

Questions Answer the following as if speaking to a hiring manager: 1. Where do you want to develop your career in the next 2–5 years, and why? 2. Why ...

Behavioral & LeadershipMotivation & FitDebugging
19
1
136 people solved
Feb 12, 2026
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