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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026
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
Capital One logo
Capital One
Hard
Data Scientist

Demonstrate cross-functional leadership with data and reflection

Cross-Functional Project Under a Hard Deadline (Data Scientist) Context: Share one concrete project where you partnered across at least three function...

Behavioral & Leadership
9
0
77 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Data ScientistNew Grad

Describe Conflict and Impact

Prepare strong answers for the following behavioral and project deep-dive questions for a data scientist role: 1. Tell me about a time you went beyond...

Behavioral & LeadershipOwnership & ExecutionProject Deep Dive
11
0
76 people solved
Feb 27, 2026
HBO logo
HBO
Hard
Data Scientist

Design an A/B for rare cancellations

A/B Test Design: Autoplay-Preview on the Home Page Context: A streaming service is testing an autoplay-preview feature on the home page. Weekly cancel...

Analytics & Experimentation
3
0
32 people solved
Oct 13, 2025
Meta logo
Meta
Easy
Data Scientist

Design measurement to detect fake accounts

Context You work on a social platform. The only product surface you can rely on is friend requests (sending/receiving/accepting/declining). Assume you...

Analytics & ExperimentationMetrics & KPIs
10
1
177 people solved
Nov 16, 2025
Roblox logo
Roblox
Medium
Machine Learning Engineer Locked

Design a game genre classifier

This question evaluates system design and machine learning competencies, including multi-modal modeling (text, images, tabular), data and label qualit...

ML System Design
17
0
145 people solved
Feb 27, 2026
Amazon logo
Amazon
Medium
Software Engineer

Implement a formatted shell script output

Implement a formatted shell script output Write a shell script named script.sh that is invoked as: ./script.sh <username> <path_of_file>. It must prin...

Coding & Algorithms
5
0
49 people solved
Aug 10, 2025
Meta logo
Meta
Medium
Data Scientist

Advertising for local businesses boosting popular posts

Boosting Popular Posts for Local SMBs You are evaluating an experiment where small local businesses can pay to boost their popular organic posts. Defi...

Analytics & Experimentation
103
0
322 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Software Engineer

Handle palindrome & decimal addition

Question LeetCode 266. Palindrome Permutation Given two non-negative decimal number strings, implement addition that supports a decimal point. https:/...

Coding & Algorithms
12
0
48 people solved
Jul 29, 2025
TikTok logo
TikTok
Hard
Data Scientist

Investigate visit–report correlation causality

Causal Diagnosis: Do More Ad Page Visits Cause More Reports? Context You observe a positive correlation between the number of ad page visits and the p...

Analytics & Experimentation
3
0
55 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

How to decide if users need a new feature

You are a Data Scientist at a social app. The product team proposes a new in-app feature (e.g., a new sharing surface). You have event-level data and ...

Analytics & Experimentation
3
0
38 people solved
Nov 2, 2025
Amazon logo
Amazon
Medium
Software Engineer

Describe achievements, ambiguity, conflict, efficiency, challenges

Describe achievements, ambiguity, conflict, efficiency, challenges Behavioral Technical Screen — Multi-part Prompt Context: You are interviewing for a...

Behavioral & Leadership
3
0
41 people solved
Jul 16, 2025
Capital One logo
Capital One
Hard
Data Scientist

Design a profit growth strategy

Ride-share Profit Plan (Next Quarter) Context You are the data scientist for a ride-share marketplace (two-sided: riders and drivers). Your goal is to...

Analytics & Experimentation
4
0
41 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Build a Bayes classifier for reviewer types

This question evaluates Bayesian inference skills, including posterior updating under conditional independence, likelihood modeling for categorical ob...

Machine Learning
2
0
29 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Data Scientist Locked

Evaluate UberEATS priority delivery and membership

This question evaluates a data scientist's competency in pricing strategy, marketplace economics, causal experimentation, metric selection, and estima...

Analytics & ExperimentationExperiment Design (A/B Testing)Business Case Analysis
7
0
79 people solved
Feb 28, 2026
Meta logo
Meta
Medium
Data Scientist

Analyze Comment Distribution Using Statistical Metrics and Tests

Analyze Comment Distribution Using Statistical Metrics and Tests Assessing Concentration of Comments Across Posts Scenario You are analyzing comments ...

Analytics & Experimentation
5
0
42 people solved
Aug 4, 2025
Meta logo
Meta
Easy
Data ScientistSenior+

Compute invalid event percentage by pixel

Context You work on an ads pixel instrumentation platform. Each pixel emits events throughout the day; some events are missing (not observed) and some...

Data Manipulation (SQL/Python)
1
1
24 people solved
Aug 1, 2025
Amazon logo
Amazon
Medium
Applied Scientist

Describe a high-stakes project you owned

Describe a high-stakes project you owned Behavioral: End-to-End Ownership Under Ambiguity You are interviewing for a Machine Learning Engineer role. U...

Behavioral & Leadership
7
0
80 people solved
Jul 17, 2025
Meta logo
Meta
Medium
Data Scientist

Design A/B Test to Evaluate New Video-Feed Feature

Design A/B Test to Evaluate New Video-Feed Feature Scenario A consumer social-media app is launching a short‑video feed (TikTok-style). A newly added ...

Analytics & Experimentation
3
0
36 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluate Facebook's Restaurant Recommendations Feature Effectiveness

Experiment Design: Restaurant Recommendations in Facebook News Feed Facebook is considering restaurant recommendation units inside News Feed, such as ...

Analytics & Experimentation
13
0
44 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Data Scientist

Implement Reservoir Sampling; Analyze Time and Space Complexity

Scenario Process an unbounded stream of user IDs and maintain a uniform random sample of k users in memory. Question Implement reservoir sampling for ...

Coding & Algorithms
25
0
78 people solved
Aug 4, 2025
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